These Robotic Arms Are Powered by Algae. Watch How They Move

The promising candidate contains roughly 2 billion times the sun’s mass in hydrogen, yet appears to have no stars. Studying it could help answer questions that have vexed astronomers for years.

Put your ‘80s movie knowledge to the test by matching 10 iconic stars to some of the decade's most memorable action movies.

I used the Urevo CyberMega during my marathon training and it impressed with its high top speed, connectivity and fully foldable design.

When Jane first heard about Memory and Imagination, a rare 1990s documentary about the Library of Congress, she was intrigued. But the Canadian writer in her 30s couldn’t find the movie anywhere — not on streaming services, not on YouTube, not on pirate sites — and her intrigue turned into obsession. Worried it might become a lost film, Jane decided to scour auction sites, search every library catalog she could think of, and even enlist some of her online acquaintances to find a copy. Her plan w