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AnthropologyA foot fossil suggests a second early human relative lived alongside Lucy
Foot bones and other fossils have been attributed to Australopithecus deyiremeda, a recently discovered species that may shake up the human family tree.
By Jay Bennett -
Science & SocietyGratitude can increase joy, even if it feels a little cringe
Like exercise, gratitude takes many forms. Finding the right practice, research shows, is up to the individual.
By Sujata Gupta -
AnimalsCuddly koalas had a brutal, blade-toothed close cousin
Ancient collagen preserved in the bones of extinct Australian mammals is revealing their evolutionary relationships, leading to some surprises.
By Jake Buehler -
Planetary ScienceBoiling oceans may sculpt the surfaces of small icy moons
Simulations show that subsurface oceans on small moons may hit boiling conditions, potentially creating features like Miranda’s distinctive ridges.