Icefish Study Adds Another Color to the Story of Blood
The rainbow of pigments that animals use for blood illustrates a central truth about evolution
Stories by John Rennie
Gene Drives Shown to Work in Female Mice
Biologists have demonstrated for the first time that a controversial genetic engineering technology works, with caveats, in mammals
Safe Limit for Global Warming Is Lowered Dramatically by Experts
Carbon taxes and nuclear power will be necessary to cut CO2 emissions quickly enough to avert disastrous climate change, they say
How the Dive Reflex Extends Breath-Holding
Being under water triggers several biological responses that help to prolong breath holds
The Evolutionary Errors of X-Men
Please, Magneto, stop blaming evolution for your anger issues
The Immortal Ambitions of Ray Kurzweil: A Review of Transcendent Man
A documentary about Ray Kurzweil's belief that technology could conquer mortality reveals the futurist's emotional life but fails to question his bold claims
7 Answers to Climate Contrarian Nonsense
Evidence for human interference with Earth's climate continues to accumulate
Inspirations in Space and Closer to Home
Astronomers are finding new planets; humanitarians are improving this one
See No Evil: The Danger of (Human) Primates
Primates can be dangerous and do harm, especially the human ones
In Our Expanding Universe, Earth Is Nothing Special
We're an ordinary species on an ordinary planet. Or are we?
Cleaning up the dirtiest fossil fuel: One company's coal fix
BOSTON (March 11, 2009) -- In most discussions of energy and climate, coal figures prominently as one of the villains. Burning coal is responsible for more than a third of all energy-related U.S...
Tuberculosis, The Unromantic Killer
Tuberculosis has never stopped being one of the world's most lethal infections
A Molecular Checkup: The Nano Future of Medicine
Scientific American Editor in Chief John Rennie introduces the February 2009 issue
Green Role Model: California Academy of Sciences
This campus features a roof growing as green as their traditional landscaping
Dynamic Darwinism: Evolution Theory Thrives Today
The naturalist would approve of how evolutionary science continues to improve
