oocyte, evolution, disease & medicine
On the Origin of Birds
Cristina Luiggi | Jul 27, 2011
The discovery of a new bird-like fossil challenges longstanding theories about which species of dinosaur gave rise to the avian lineage.
Electric Dolphins?
Jef Akst | Jul 27, 2011
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.
Latitude Affects Human Eye Size
Jef Akst | Jul 27, 2011
People living 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.
Chimp Brains Don’t Shrink with Age
Tia Ghose | Jul 25, 2011
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.
Neanderthal DNA in Modern Humans
Jef Akst | Jul 19, 2011
Non-African people carry remnants of the Neanderthal X chromosome, suggesting interbreeding with early human ancestors.
Repainting Ancient Birds
Megan Scudellari | Jul 1, 2011
Using synchrotron rapid scanning X-ray fluorescence to map the distribution of trace metals in avian fossils over 120 million-year-old, researchers reconstruct the pigment patterns of their feathers—revealing some of the extinct birds' long-lost colors.
Thymus Finder
Richard P. Grant | Jul 1, 2011
Editor’s Choice in Immunology
Foresight
Karen Hopkin | Jul 1, 2011
Studying the earliest events in visual development, Carla Shatz has learned the importance of looking at one’s data with open eyes—and an open mind.
Harmit Malik: Viral Historian
Megan Scudellari | Jul 1, 2011
Member, Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington. Age: 38
Color by Number Fossils
Megan Scudellari | Jun 30, 2011
Researchers map pigments in early bird fossils using preserved metallic residues.