The history of six large herbivores — the woolly rhinoceros, woolly mammoth, wild horse, reindeer, bison, and musk ox — is the subject of a study by an international group of scientists investigating how climate fluctuations and human activity affected mammal populations at the end of the last ice age. According to Beth Shapiro, the […] … learn more→

Converting sunlight into electricity is not economically attractive because of the high cost of solar cells, but a recent, purely optical approach to improving luminescent solar concentrators (LSCs) may ease the problem, according to researchers at Argonne National Laboratories and Penn State. Using concentrated sunlight reduces the cost of solar power by requiring fewer solar […] … learn more→