The discovery of a new bird-like fossil challenges longstanding theories about which species of dinosaur gave rise to the avian lineage.
The discovery of a new bird-like fossil challenges longstanding theories about which species of dinosaur gave rise to the avian lineage.
Like many fish and amphibians, the Guiana dolphin can sense low levels of electrical activity in the water—an ability not previously reported in true mammals.
People living in near the Earth’s poles, where days are often short and light often low, have larger eyes and visual cortices than those closer to the equator.
Unlike human brains, chimpanzee brains don’t get smaller as they age, suggesting that pronounced neurological decline is a uniquely human byproduct of our oversized brains and extreme longevity.
Non-African people carry remnants of the Neanderthal X chromosome, suggesting interbreeding with early human ancestors.
The story of the US government’s efforts to stamp out smallpox in the early 20th century offers insights into the science and practice of mass vaccination.
In Chapter 5, "The Stable and the Laboratory," author Michael Willrich explores the burgeoning vaccine manufacture industry that ramped up to combat smallpox epidemics in turn-of-the-twentieth-century American cities.