Thomas Garlinghouse (@garlinghouseTom) is a graduate student in the Science Communication Program at the University of California, Santa Cruz.
When the foraging sea mammals crack shells to collect food, they produce distinctive evidence.
Thomas Garlinghouse, Contributor
Ancestors of modern humans may have scavenged calorie-rich bone marrow from already dead animals.
Chemical analysis shows presence of what was probably a primitive embalming fluid.
Inside Science is an editorially independent news service of the American Institute of Physics