Early land animals skipped the tadpole phase

For decades, biologists thought that early tetrapods, ancient vertebrates that started conquering the land over 300 million years ago, developed like modern amphibians—beginning their lives as purely aquatic tadpoles and…

Signs of Thaw in the Bering Sea

Earth Observatory Science Earth Observatory Signs of Thaw in the Bering Sea Earth Earth Observatory Image of the Day EO Explorer Topics All Topics Atmosphere Land Heat & Radiation Life…