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May 2, 2025
An astronomer explores the cosmos and the limits of what science can test. Plus, how the mysterious properties of pasta—like how it bends, coils, and breaks—have been tested by physicists for decades. And, millions of years ago, iguanas somehow got from North America to Fiji. Scientists think they made the trip on a raft of fallen vegetation.
Virus Hunter Recalls Discovery of Ebola and HIV
Would you be brave enough to go deep into the African jungle to investigate a deadly new virus? Peter Piot was, and he’s here to tell the tale.
Desktop Diaries: Sylvia Earle
A moray eel, a flock of geese, and a shrunken head are just a few of things found in and around Her Deepness’ office.
Bacterial Armor Imaged, Down to the Details
Images of a bacterium reveal a protective protein coat akin to the chainmail of a medieval knight.
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.