Sentences with phrase «scientist in the past centuries»

Such demands would have been a big burden to a scientist in the past centuries.

Not exact matches

A technical field with the explicit raison d'etre of helping people, biomedical engineering, arose in the past century as a partnership among medical researchers, clinicians, physical scientists, and engineers and has evolved into a separate discipline now taught at engineering schools across the country.

The past century's great advances in medical diagnosis and treatment — including kidney dialysis, artificial body parts such as lenses and joints, magnetic resonance imaging, and genetic testing — could have happened only with crucial contributions from physical scientists and engineers, who will also be needed for the next generation of health care miracles.

EOS scientists have earlier pointed out a large earthquake may occur any time in this area southwest of Padang — the only place along a large fault where a big earthquake has not occurred in the past two centuries.

That glimpse into the past was provided by 66 tree - ring data sets scientists used to stitch together an annual record of snowpack far older than modern observations, which began in the early 20th century.

Reporting on this spirit of exploration and innovation has kept New Scientist in business for the past half - century.

In a study published last year in the journal Frontiers in Ecology and the Environment, Hopkins and other scientists measured the stable isotopes of carbon and nitrogen in the hair and bone of Yosemite bears over the past century and found that since 1999, the proportion of human - derived food in bear diets has dramatically declineIn a study published last year in the journal Frontiers in Ecology and the Environment, Hopkins and other scientists measured the stable isotopes of carbon and nitrogen in the hair and bone of Yosemite bears over the past century and found that since 1999, the proportion of human - derived food in bear diets has dramatically declinein the journal Frontiers in Ecology and the Environment, Hopkins and other scientists measured the stable isotopes of carbon and nitrogen in the hair and bone of Yosemite bears over the past century and found that since 1999, the proportion of human - derived food in bear diets has dramatically declinein Ecology and the Environment, Hopkins and other scientists measured the stable isotopes of carbon and nitrogen in the hair and bone of Yosemite bears over the past century and found that since 1999, the proportion of human - derived food in bear diets has dramatically declinein the hair and bone of Yosemite bears over the past century and found that since 1999, the proportion of human - derived food in bear diets has dramatically declinein bear diets has dramatically declined.

Scientists are also investigating why outbreaks of exotic organisms have been reported only in the past 20 years, when water has been used as ballast for more than a century.

By analyzing the vivid colors in paintings by such artists as J.M.W. Turner, Claude Lorrain, Alexander Cozens, and Edgar Degas, some scientists hope to say something significant about volcano - related cooling — and possibly human - induced pollution — over the past few centuries.

The strongest evidence for global warming comes from physics and chemistry, not from records of past temperatures, which is why scientists were predicting warming long before the rise in temperature over the 20th century was obvious.

Alhazen is just one of a multitude of scientists working in the Muslim world in centuries past who made significant contributions to the advancement of science.

She hopes her research will generate discussion among scientists today who are working on Everglades restoration in many disciplines with the outcome to collaborate and take into account the human impact on the landscape, not just in the 21st century but thousands of years into the past.

«There's a perception that jellyfish numbers are exploding in the world's oceans,» says marine scientist Rob Condon of the Dauphin Island Sea Lab in Alabama, «but there's no real evidence for a global increase in jellyfish over the past two centuries.»

Thanks in large part to satellite measurements, scientists» skill in measuring how much sea levels are rising on a global scale - currently 0.13 inch (3.4 millimeters) per year - has improved dramatically over the past quarter century.

In fact, scientists have long recognized the importance of solar variability as one of the factors governing climate (see the very scholarly review of the subject by Bard and Frank, available here at EPSL or here as pdf) An understanding of solar variability needs to be (and is) taken into account in attribution of climate change of the past century, and in attempts to estimate climate sensitivity from recent climate variationIn fact, scientists have long recognized the importance of solar variability as one of the factors governing climate (see the very scholarly review of the subject by Bard and Frank, available here at EPSL or here as pdf) An understanding of solar variability needs to be (and is) taken into account in attribution of climate change of the past century, and in attempts to estimate climate sensitivity from recent climate variationin attribution of climate change of the past century, and in attempts to estimate climate sensitivity from recent climate variationin attempts to estimate climate sensitivity from recent climate variations.

The methane piece of the global warming puzzle is even more difficult to grasp because while its levels have steadily risen since the mid-19th century, they have leveled off in the past decade, and scientists aren't sure why — there could be less methane emissions or more destruction of the molecule as it reacts in the atmosphere.

«In the past 20 years, scientists have made leaps and bounds in understanding how children learn — and what kids need for optimal growth and development in the 21st century,» explains founding member Kathryn Hirsh - Pasek, who is also the director of the Infant Language Laboratory at Temple University, coauthor of the award - winning book Einstein Never Used Flash Cards and codirector of the Ultimate Block PartIn the past 20 years, scientists have made leaps and bounds in understanding how children learn — and what kids need for optimal growth and development in the 21st century,» explains founding member Kathryn Hirsh - Pasek, who is also the director of the Infant Language Laboratory at Temple University, coauthor of the award - winning book Einstein Never Used Flash Cards and codirector of the Ultimate Block Partin understanding how children learn — and what kids need for optimal growth and development in the 21st century,» explains founding member Kathryn Hirsh - Pasek, who is also the director of the Infant Language Laboratory at Temple University, coauthor of the award - winning book Einstein Never Used Flash Cards and codirector of the Ultimate Block Partin the 21st century,» explains founding member Kathryn Hirsh - Pasek, who is also the director of the Infant Language Laboratory at Temple University, coauthor of the award - winning book Einstein Never Used Flash Cards and codirector of the Ultimate Block Party.

«In an op - ed piece in the December 11 issue of NRC / Handelsblad, Wilco Hazeleger, a senior scientist in the global climate research group at KNMI, writes: «In the past century the sea level has risen twenty centimeterIn an op - ed piece in the December 11 issue of NRC / Handelsblad, Wilco Hazeleger, a senior scientist in the global climate research group at KNMI, writes: «In the past century the sea level has risen twenty centimeterin the December 11 issue of NRC / Handelsblad, Wilco Hazeleger, a senior scientist in the global climate research group at KNMI, writes: «In the past century the sea level has risen twenty centimeterin the global climate research group at KNMI, writes: «In the past century the sea level has risen twenty centimeterIn the past century the sea level has risen twenty centimeters.

Given that studies of past climate patterns have found evidence of super-deluges in the Northeast, and that scientists have observed a century - long trend toward more rainfall coming in heavy downpours in the world's temperate zones (a pattern matching what's expected in a greenhouse - heated world), the logic in planning for the worst case in designing everything from a dam to a basement to a rural road is growing ever stronger.

Here are some possible choices — in order of increasing sophistication: * All (or most) scientists agree (the principal Gore argument) * The 20th century is the warmest in 1000 years (the «hockeystick» argument) * Glaciers are melting, sea ice is shrinking, polar bears are in danger, etc * Correlation — both CO2 and temperature are increasing * Sea levels are rising * Models using both natural and human forcing accurately reproduce the detailed behavior of 20th century global temperature * Modeled and observed PATTERNS of temperature trends («fingerprints») of the past 30 years agree

I first learned about this kind of work when I went to Switzerland in the early 1990s to report on the accelerating retreat of glaciers in the Alps and met several scientists studying centuries worth of paintings, drawings, and other artistic representations to clarify where the snouts of glaciers sat in centuries past.

The scientists working on the IPCC assessments have carefully documented observed changes in air temperature, ocean temperature, ice retreat, and sea level rise since the past century.

NASA scientists used tree rings to understand past droughts and climate models incorporating soil moisture data to estimate future drought risk in the 21st century.

On average in the United States, the amount of rain falling during the heaviest 1 percent of rainstorms has increased nearly 20 percent during the past 50 years — almost three times the rate of increase in total precipitation.4, 5 The Midwest saw an even larger average increase of 31 percent, surpassed only by the Northeast (at 67 percent).4 Scientists attribute the rise in heavy precipitation to climate change that has already occurred over the past half - century.6

As evidence, consider that there are tens of thousands of non-medical scientists in the UK; yet in the past quarter century, there do not seem to have been any convictions for fraud.

We should prepare now for dangerous global cooling (By Paleoclimatologist Tim Patterson, professor in the department of Earth Sciences at Carleton University in Ottawa)-- Excerpt: Solar scientists predict that, by 2020, the sun will be starting into its weakest Schwabe solar cycle of the past two centuries, likely leading to unusually cool conditions on Earth.

«No evidence for accelerated sea - level rise» says Royal Netherlands Meteorological Institute — December 12, 2008 Excerpt: In an op - ed piece in the December 11 issue of NRC / Handelsblad, Wilco Hazeleger, a senior scientist in the global climate research group at KNMI, writes: «In the past century the sea level has risen twenty centimeterIn an op - ed piece in the December 11 issue of NRC / Handelsblad, Wilco Hazeleger, a senior scientist in the global climate research group at KNMI, writes: «In the past century the sea level has risen twenty centimeterin the December 11 issue of NRC / Handelsblad, Wilco Hazeleger, a senior scientist in the global climate research group at KNMI, writes: «In the past century the sea level has risen twenty centimeterin the global climate research group at KNMI, writes: «In the past century the sea level has risen twenty centimeterIn the past century the sea level has risen twenty centimeters.

According to NASA, «Multiple studies published in peer - reviewed scientific journals show that 97 percent or more of actively publishing climate scientists agree: Climate - warming trends over the past century are extremely likely due to human activities.»

Excerpt: In an op - ed piece in the December 11 issue of NRC / Handelsblad, Wilco Hazeleger, a senior scientist in the global climate research group at KNMI, writes: «In the past century the sea level has risen twenty centimeterIn an op - ed piece in the December 11 issue of NRC / Handelsblad, Wilco Hazeleger, a senior scientist in the global climate research group at KNMI, writes: «In the past century the sea level has risen twenty centimeterin the December 11 issue of NRC / Handelsblad, Wilco Hazeleger, a senior scientist in the global climate research group at KNMI, writes: «In the past century the sea level has risen twenty centimeterin the global climate research group at KNMI, writes: «In the past century the sea level has risen twenty centimeterIn the past century the sea level has risen twenty centimeters.

Despite the lack of an El Niño effect, 2017 is set to be the second or third hottest year on record; hurricanes unprecedented in their power pummelled the U.S. and Caribbean; the largest wildfires California has seen burned deep into the Northern Hemisphere winter; scientists warned the «Arctic shows no sign of returning to the reliably frozen region of recent past decades»; studies revealed an ecological armageddon amongst insect populations; droughts fuelled famine and insecurity across East Africa and the Middle East; the U.N. warned the number of chronically undernourished people has risen for the first time since the turn of the century due in large part to climate impacts.

Lead scientist on the project Jessica Tierney told Reuters the sharp rise in temperature coincided with rises in human emissions of greenhouse gases seen in the past century, so the study added to evidence that emissions are warming the planet.

«Scientists now claim that a 0.0001 mole fraction increase in CO2 over the past century controls the climate.

Permafrost degradation in the Mackenzie Basin is a large factor in erosion, flooding, and landslides.2, 3,4,5,6 Scientists have documented more than 2,000 slides in the Mackenzie Valley over the past century, as well as another 1,000 additional landslides in fine - grained sediments known as retrogressive thaw - flows in the Mackenzie Delta - Tuktoyaktuk Peninsula.2

Scientists traditionally in past centuries were the heroes of independent integrity in objective thought.

«Multiple studies published in peer - reviewed scientific journals1 show that 97 % or more of actively publishing climate scientists agree: Climate - warming trends over the past century are very likely due to human activities.

However, 97 percent of climate scientists agree that humans have changed Earth's atmosphere in dramatic ways over the past two centuries, resulting in global warming.

Many scientists are tired of the criticisms, and the IPCC concluded that it is «likely» that the second half of the twentieth century was the warmest 50 - year period in the Northern Hemisphere during the past 1,300 years.

RE: The Over-whelming scientific Consensus on man - made CO2 caused Global - warming - 97 % of the climate scientists surveyed believe «global aver temps have increased» during the past century [So do I]-- Your quotes: How «significant it is that 84 % of climate scientists have reached a «consensus» that «human - induced warming is occurring» «--RCB- 84 % «personally believe» [implies they may NOT have actually studied this topic — IE: may NOT be experts on this particular matter] human - induced warming is occurring -LCB--... — «In 1991 only 41 % of climate scientists were very confident that industrial emissions of greenhouse gases were responsible for climate disruption.

The data scientists are now studying reveal substantial evidence that on average Arctic temperatures in the winter have risen 11 degrees over the past 30 years, and in the late 20th century were the warmest in four centuries.

Bear in mind too that very few scientists close to the problem, when asked the specific question, would say there is only a very small possibility (for example, less than 5 per cent) that internal ocean behaviour could be a major cause of the warming over the past half - century (27).

An international team of scientists led by Lan Qie, then at the University of Leeds, analyzed long - term measurements of 71 - hectare plots across the huge island, and discovered that over the past half century, Borneo's intact forest increased in biomass by an average of 430 kilograms per hectare per year.

That is three times as much as the rise measured in the 20th century and within the mainstream projections that skeptical scientists had in years past criticized as alarmist.

As with every other existential threat humans have faced in the past century, the only ones who can save our pathetic species are the scientists, and as usual if we succeed, the thanks we will get is being called alarmists by the great unwashed we have saved.

As Gore notes, scientists have observed a pattern of steadily increasing concentrations of CO2 in the atmosphere during the past half - century.

«Multiple studies published in peer - reviewed scientific journals show that 97 percent or more of actively publishing climate scientists agree: Climate - warming trends over the past century are extremely likely due to human activities.»

The methane piece of the global warming puzzle is even more difficult to grasp because while its levels have steadily risen since the mid-19th century, they have leveled off in the past decade, and scientists aren't sure why — there could be less methane emissions or more destruction of the molecule as it reacts in the atmosphere.

Scientists also discern a greenhouse fingerprint in downpours, which in the continental United States have increased 20 percent over the past century.