LifeSabre-toothed cats shared their food with injured pride members Prehistoric sabre-toothed cats often injured their impressive jaws during hunts. Now fossil evidence suggests injured cats could rely on their peers for food News
LifeOxygen may have helped complex life arise a billion years early Earth’s air suddenly got a lot more oxygen around 1.6 billion years ago and that could have triggered the evolution of large multicellular organisms News