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February 7, 2025
Some research shows that e-cigarettes can be a useful tool for quitting cigarettes, but that strategy is hotly contested by scientists. Plus, an investigative journalist outlines how fraud and misconduct have stalled the search for effective Alzheimer’s treatments in a new book. And, why snow has that crisp, clean smell.
Mapping the Microbial Make-Up of Healthy Humans
Scoping out the trillions of germs that call the healthy human body home.
How the Morning-After Pill Works
Growing scientific evidence weakens claims that the morning-after pill is tied to abortion.
SpaceX Dragon May Ferry Astronauts by 2015
After a successful cargo run to the space station, SpaceX is preparing the Dragon capsule for crew.
Ex-Spy Telescopes May Aid Hunt for Dark Energy
The spy telescopes are wide-angle and short in length–earning them the nickname “stubby Hubbles.”
What Happens When Two Galaxies Collide?
Astronomers say the Andromeda and Milky Way galaxies will collide in four billion years.
The Winning Answer to a Burning Question
The winner of Alan Alda’s ‘Flame Challenge’ draws on animation, song and a physics background.
Identifying the Real Culprit Behind Killer Vascular Diseases
A study finds stem cells are to blame for blocked arteries that cause heart attacks and stroke.
How ‘Flame’ Malware Hijacks a Computer
This malware spies, eavesdrops and writes home with data from infected computers.
Paralyzed Rats Walk, Even Sprint After Rehab
Paralyzed rats regain their footing after rehab forges new connections between brain and spinal cord.
Lightning Bug of a Different Color
Forget the fireflies, some millipedes glow in the dark too.