Theories suggest that as the rest of the earth warms, tropical temperatures would be regulated by an internal ‘thermostat,’ but new research indicates the tropics may have reached temperatures too hot for living organisms to survive in parts of the tropics during the Paleocene-Eocene Thermal Maximum

Although many people have argued that rising carbon dioxide levels would benefit crop production, a recent model of the effects of increased CO2 shows that it's not that simple and that elevated levels could have a much less positive effect on plant photosynthesis than previously predicted.

A physicist has finally observed a butterfly Rydberg molecule -- a weak pairing of two highly excitable atoms -- that he predicted would exist 14 years ago.

Soluble corn fiber can help young women build bone and older women preserve bone

Rapid, low-temperature process adds weeks to milk's shelf life

Old World metals were traded on Alaska coast several hundred years before contact with Europeans

Ziro robotics kit is 'success story' for Purdue, National Science Foundation

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