Alzheimer's disease is a complex, multi-faceted condition, and while we know a lot about its signs and symptoms, experts are still trying to crack the code on its causes and factors. Now, new research ...

Black mambas (Dendroaspis polylepis) are Africa's longest, most famous venomous snakes. Despite their fearsome reputation, these misunderstood snakes are vital players in their ecosystems. They keep ...

Dan Daher rolled out at 5 a.m. from the shaded parking lot behind the Torres Martinez Tribal Community Hall in Mecca, as he does every Sunday through Thursday. By day's end, he'll have logged nearly ...