To understand the environmental pressures that shaped human evolution, scientists must first piece together the details of the ancient plant and animal communities that our fossil ancestors lived in over the past 7 million ...
Archaeology
Oct 7, 2019
10
3688
Chemistry is more than just mixing compound A with compound B to make compound C. There are catalysts that affect the reaction rate, as well as the physical conditions of the reaction and any intermediate steps that lead ...
Materials Science
Jul 17, 2019
0
199
A happy cell is a balanced cell, but for every stupendously twisted protein it creates, it must tear the old ones asunder. That means untangling a convoluted pretzel-like mass for recycling. Cdc48 plays a critical role in ...
Biochemistry
Jun 27, 2019
0
1
Based on careful study of fossilized teeth, scientists Keegan Melstom and Randall Irmis at the Natural History Museum of Utah at the University of Utah have found that multiple ancient groups of crocodyliforms—the group ...
Archaeology
Jun 27, 2019
1
3
Nature, said Ralph Waldo Emerson, is no spendthrift. Unfortunately, he was wrong.
Environment
Jun 24, 2019
0
1
A new study of climate changes and their effects on past societies offers a sobering glimpse of social upheavals that might happen in the future.
Environment
Jun 17, 2019
11
215
Winters in the northern hemisphere are brutal. The harsh conditions drive some species to hibernate; bears reduce their metabolic state to conserve energy until spring. Forests also endure winter by conserving energy; they ...
Earth Sciences
May 27, 2019
0
355
In countless grade-school science textbooks, the Earth's mantle is a yellow-to-orange gradient, a nebulously defined layer between the crust and the core.
Earth Sciences
May 20, 2019
0
156
Over 11 field seasons, between 1999 and 2010, ornithologist Cagan Sekercioglu trekked through the forests and coffee fields of Costa Rica to study how tropical birds were faring in a changing agricultural landscape. Through ...
Ecology
Apr 29, 2019
0
54
Contrary to what you may have been taught, water doesn't always freeze to ice at 32 degrees F (zero degrees C). Knowing, or controlling, at what temperature water will freeze (starting with a process called nucleation) is ...
Materials Science
Apr 12, 2019
0
1085
