Sentences with phrase «additional human fossils»

At a debate with anthropologist Alan Mann of the University of Pennsylvania (now of Princeton) on April 20th, 2001, Cuozzo claimed to have discovered two additional human fossils at the site in England where the original Swanscombe Man fossil was discovered.

Not exact matches

«Not only does the model work for explaining differences in basic molar design, but it is also powerful enough to accurately predict the range of variants in size, shape, and additional cusp presence, from the most subtle to the most extreme, for most apes, fossil hominins, and modern humans,» says Ortiz.

Human decisions have introduced additional perturbations to the carbon cycle, in the form of fossil - fuel burning, cutting down forests, and land use changes, just to name a few.

However, the Management and Guest Contributors at WUWT accept the basic truth that CO2, water vapor, and other «greenhouse gases» are responsible for an ~ 33ºC boost in mean Earth temperature, that CO2 levels are rising, partly due to our use of fossil fuels, that land use has changed Earth's albedo, and that this human actvity has caused additional warming.

Those arguing that the fossil fuel greenhouse is unstoppable because of hard - wired human short - term greed, scientific illiteracy and failure of technological imagination may have a point, But think about this: Building seawalls, massively air conditioning new habitats inland and dealing with a flood of environmental refugees as the planet warms with take a huge chunk of additional energy in itself.

These vast numbers of additional humans cleared forests increasing CO2, mined and burned lots of peat which is a fossil fuel, and increased bovine herds substantially which raises methane levels.

Humans have been putting additional carbon dioxide into the atmosphere through the burning of fossil fuels for only a century or so.

The red numbers and arrows show the additional fluxes caused by human activities averaged over 2000 - 2009, which include emissions due to the burning of fossil fuels, cement production and land use change (in total about 9 PgC / year).

So far, the additional human recycling of fossil fuels has been quite beneficial to C3 plants; Earth is greening.

The additional CO2 from fossil fuel burning and deforestation has disturbed the balance of the carbon cycle, because the natural processes that could restore the balance are too slow compared to the rates at which human activities are adding CO2 to the atmosphere.

Whether one believes the IPCC or not, the risk is about 2.5 to 6.5 degrees of additional climate change caused by humans with current fossil fuel intensive behaviour by the end of this century, dwarfing natural cycles, and with continuing consequences for thousands to tens of thousands of years.

[7][8] The vast majority of anthropogenic carbon dioxide emissions (i.e., emissions produced by human activities) come from combustion of fossil fuels, principally coal, oil, and natural gas, with comparatively modest additional contributions coming from deforestation, changes in land use, soil erosion, and agriculture.