Whether it is the sprawl of deserts or the loss of tropical forests as the world's poor cut trees for firewood and clear land for agriculture, or the ineluctable
warming of the planet as vehicles and factories deposit millions of tons of greenhouse gases into the atmosphere, «economic pressures lie behind them all» (Tolba 1991, p. 10).
In her first major environmental proposal, Nixon called on New York State to commit to 100 percent renewable energy sources by 2050 — a benchmark that has been something of a Holy Grail for activists concerned about
the warming of the planet as a result of the burning of fossil fuels.
When you hear the term «global warming,» do you think of the warming of air temperatures at the Earth's surface, or
the warming of the planet as a whole?
Not exact matches
The EU considers itself at the forefront
of the fight against climate change and
as a bloc it's on track to meet its obligations under the Kyoto Protocol, which limits the emissions
of gases that
warm the
planet.
According to a big chunk
of ocean surface temperature recorded by boat, the oceans were not
warming nearly
as quickly
as the rest
of the
planet.
With its slower pace
of living,
warm, welcoming climate, healthy, fresh foods and reputation
as one
of the «greenest and cleanest» countries in the world with little pollution, lots
of clean water and fresh air... it's no wonder Costa Ricans are considered the «happiest people on the
planet».
As the
planet warms, driven by Western excess and cascading Asian growth (China adds the equivalent
of southern California's electric grid annually), life may become increasingly untenable.
As one
of the group's leaders, Hsu Jen - hsiu, rightly says eating less or no meat is a way to love our
planet because livestock emit large volumes
of methane into the atmosphere, which contribute more to global
warming than the emissions produced by all the vehicles around the world.
The changes to our
planet as a result
of global
warming are apparent for all to see: the receding glaciers in temperate climates, the reduction in rainfall and advancing deserts in Africa and the lakes in the Mideast and Asia that are virtually disappearing.
It's no mystery why carbon dioxide (CO2) levels fluctuate with the seasons:
As greenery grows in the spring and summer, it soaks up the
planet -
warming gas, and when trees shed their leaves in the autumn, some
of that gas returns to the atmosphere.
The simulations also suggest that the removal
of excess carbon dioxide from the atmosphere by natural processes on land and in the ocean will become less efficient
as the
planet warms.
Swift and decisive action and a robust infrastructure are required to solve the medical issues arising
as the
planet warms, «but we don't have much time,» says Anthony Costello
of University College London.
He cited several studies showing that a large number
of species on the
planet would become extinct in a «business
as usual» global
warming scenario.
Of all the possible ways in which climate change could affect our planet, this is the most bizarre: as the oceans warm up, Earth will start rotating a wee bit faster, reducing the length of a da
Of all the possible ways in which climate change could affect our
planet, this is the most bizarre:
as the oceans
warm up, Earth will start rotating a wee bit faster, reducing the length
of a da
of a day.
Raymond Pierrehumbert at the University
of Chicago and Eric Gaidos at the University
of Hawaii in Honolulu calculated the
warming effect
of a hydrogen blanket on Earth - sized
planets,
as well
as on worlds a few times more massive than our own, known
as super-Earths.
As we approach the 40th anniversary
of the Clean Air Act and Clean Water Act, ensuring public health and sustaining a federal agency to regulate global
warming emissions is crucial to the future
of our nation and preservation
of our
planet.
Recent modelling by researchers from the Potsdam Institute for Climate Impact Research in Germany,
as well
as studies
of past climate, suggest that the
planet will soon have
warmed enough to melt Greenland's ice sheet entirely — if it hasn't already become
warm enough.
As the
planet warms and dries in some areas, species are pushed out
of niches they currently occupy.
Assuming Proxima b is tidally locked, Webb could then detect changes in the
planet's thermal glow
as its cold, nightside and
warm, sunlit dayside shift in and out
of view across one complete orbit, rather like watching phases
of the moon
as it circles Earth.
But for planetary scientists, Jupiter's most distinctive mystery may be what's called the «energy crisis»
of its upper atmosphere: how do temperatures average about
as warm as Earth's even though the enormous
planet is more than fives times further away from the sun?
Global
warming has replaced the China Syndrome
as the number one energy worry in the United States, and Cassini is delivering a whole world
of new data on Saturn: rubble - pile moons, record - groove gaps in the
planet's famous rings, complex weather systems churning through the pastel cloud cover, and possible explanations for the unrelenting 900 - mile - an - hour winds.
And if such an «off the chart» event can occur when the world has
warmed by less than 1 °C, what sort
of extreme events will occur by 2050, when the
planet could be
as much
as 3 °C hotter?
If climate change gets catastrophic — and the world sees more than 6 degrees Celsius
warming of average temperatures — the
planet will have left the current geologic period, known
as the Quaternary and a distant successor to the Ordovician, and have returned to temperatures last seen in the Paleogene period more than 30 million years ago.
These models currently predict that
as a result
of today's global climate change, Antarctica will
warm twice
as much
as the rest
of the
planet, though it won't reach its peak for a couple
of hundred years.
(At the time, the sun was
as much
as 6 % fainter than it is now, Lenton says, so the
planet -
warming effect
of greenhouse gases wasn't
as strong.)
It may seem surprising to people, but you can look at something like Mars, which has a very thin atmosphere, and you can look at something like Venus which we tend to think
of as sort
of having this rather heavy, clouded atmosphere, which [is] hellishly
warm because
of runaway greenhouse effect, and on both
of those
planets you are seeing this phenomenon
of the atmosphere leaking away, is actually what directly has led to those very different outcomes for those
planets; the specifics
of what happened
as the atmosphere started to go in each case [made] all the difference.
A study in the Proceedings
of the National Academy
of Sciences finds that the
planet's
warming oceans are inducing fish to get smaller
as a strategy to deal with increased temperature.
On some missions, such
as NASA's Curiosity Mars rover (now deep into its third Earth year seeking signs
of habitable conditions on the Red
Planet), the excess heat from the MMRTG can also be used to keep spacecraft systems
warm in cold environments.
As well as releasing greenhouse gases that warm the planet, burning fossil fuels gives off large quantities of polluting chemical
As well
as releasing greenhouse gases that warm the planet, burning fossil fuels gives off large quantities of polluting chemical
as releasing greenhouse gases that
warm the
planet, burning fossil fuels gives off large quantities
of polluting chemicals.
While a strong El Niño provided a boost to global temperatures last year, the main driver
of the
planet's temperature surge,
as well
as other climate trends, is the
warming caused by the buildup
of greenhouse gases in the atmosphere.
Environmentalists said today that they hope the administration's approval
of the plan is a signal
of more precautionary policy for the Arctic, which is
warming twice
as fast
as the rest
of the
planet.
The locations
of weather stations, changes in instruments, the siting
of weather stations in
warmer urban areas, changes in land cover and other issues have all been cited
as issues affecting the temperature trends often used to show that our
planet is in fact
warming.
The team is focusing on the Arctic because, just
as today's Arctic is
warming faster than other parts
of the
planet, the Pliocene Arctic
warmed more than the rest
of the globe.
As the
planet continues to
warm, rainfall patterns around the globe will shift — and some parts
of the United States will see their flood risks rise.
That, Jeffries said, explains why the Arctic continues to grow
warmer twice
as fast
as the lower latitudes
of the
planet.
CO2,
of course,
warms the
planet, just not
as sharply
as methane.
The sediment cores used in this study cover a period when the
planet went through many climate cycles driven by variations in Earth's orbit, from extreme glacial periods such
as the Last Glacial Maximum about 20,000 years ago, when massive ice sheets covered the northern parts
of Europe and North America, to relatively
warm interglacial periods with climates more like today's.
Yet, chlorofluorocarbons, to give them their proper name, are potent molecules that both exacerbate the blanket
of greenhouse gases
warming the world
as well
as chew up the stratospheric ozone layer protecting the
planet's inhabitants from excess doses
of ultraviolet sunlight.
From the basic physics
of the atmosphere, scientists expect that
as the
planet heats up from ever - mounting levels
of greenhouse gases, net global precipitation will increase because a
warmer atmosphere holds more moisture.
Methane, when assessed over the course
of a century,
warms the
planet about 25 times
as much
as the same mass
of carbon dioxide does.
«Cold, deep water from this little area
of the Nordic seas, less than 1 %
of the global ocean, travels the entire
planet and returns
as warm surface water.
Analysis
of the first seven years
of data from a NASA cloud - monitoring mission suggests clouds are doing less to slow the
warming of the
planet than previously thought, and that temperatures may rise faster than expected
as greenhouse gas pollution worsens — perhaps 25 percent faster.
Such stars are belted with circumstellar disks
of starlight -
warmed gas and dust that,
as they form
planets, develop clumps, rings and warps.
There was an era called white earth which starts about 700 million years ago with alternating periods
of deep ice sheets and then hotter
warmer stages which led to formation
of various kinds
of crystals, and last and luckily we live in the period known
as green earth, which started about 400 million years ago when multicellular life arose and wholly changed to biochemical breakdown the makeup
of the minerals on the
planet again.
After better quantifying the size
of stored Arctic carbon, the next question for researchers is how much permafrost will thaw
as the
planet warms.
The continual
warming of the
planet's atmosphere
as heat - trapping greenhouse gases accumulate is also a factor.
As the
planet warmed, selection might have favored people
of slighter stature.
Beaver ponds can indeed be large sources
of potent
planet -
warming greenhouse gases such
as methane and nitrous oxide, says Jennifer Edmonds, an aquatic ecologist at the University
of Alabama, Tuscaloosa.
There is some debate about when the «Little Ice Age» — the last time when global average temperatures were falling — ended, but it is well documented that glaciers started receding around that time
as a result
of the relative
warming of the
planet.
As extreme weather events likely connected to the
planet's
warming climate become increasingly common, low - income communities are positioned to suffer the worst consequences during the aftermath
of natural disasters, write the authors
of a report from the Center for American Progress called «One Storm Shy
of Despair.»