Scientific American

Speedy Science: How Fast Can You React?

Digging into Climate Change, U.S. Students Find More Than Science

SA blogger and "End of Science" and "End of War" author John Horgan is on Twitter. Folo him! @horganism His latest:

RT @mdichristina: 11-year-old daughter and I are having fun matching whale calls for science. Try it! @WhaleFM

RT @sciencegoddess: The Intel Science & Engineering Fair awarded top honors to Jack Andraka, 15, for his test for pancreatic cancer...

RT @roseveleth: MT @ScienceNOW: Science's special Human Conflict issue is out - & it's FREE! Terrorism, ritual sacrifices & war

RT @BoraZ: 5 weeks left to submit evolution-themed video. Enter by June29 & you may win $$ to attend the meeting of your choice

RT @markfischetti: See my (wet) video explainer debut: how hurricanes form Atlantic season starts June 1, altho Alberto already was close

RT @elonmusk: Launch video of Falcon 9 from Cape Canaveral tracking cameras

Most popular now on the site: "Amazing Video of Solar Eclipse Shows Sun's Structure" by @mmoyr

Amazing Video of Solar Eclipse Shows Sun's Structure

Animal Tracks: Music about Unusual Creatures Features Some Unusual Instruments [Video]

A Dragon in the Sky: Space X

RT @TheScienceGuy: Success! Space Station grasps Space-X Dragon capsule! It's historic; anew beginning.

Science Fiction Is Barely Ahead of Space Exploration Reality

RT @seanmcarroll: MT @dalcantonJD: Solar eclipse from SPACE. The moon's shadow as it crosses over clouds in Pacific NW.

Plants! In! Space!

RT @ferrisjabr: Instant Egghead 3: physics/space editor @jmtsn: What's the difference between an asteroid and a comet?

RT @myfoxla: Solar #Eclipse over Southern California 6:40PM Sunday

RT @ChrisSpagnuolo: Solar #eclipse sunset pic from Ft. Collins, CO tonight:

Follow along #eclipse here RT @bhunstable Amazing Solar Eclipse LIVE on @Ustream - h/t @cariann:

RT @BradWaller: Sun through the clouds with the iPhone. #solar #eclipse

RT @foodbully: Solar #eclipse. #happy_nerd

RT @HajiTravel: とりあえず部分日食の写真を一枚。 #solar #eclipse @/ichimonji_haji: とりあえず部分日食の写真を一枚。 http:...

Shadow Fire: 10 Fantastic Photos of Sunday's Annular Solar Eclipse

RT @Sheril_: Spectacular #eclipse photo via @ChrisSpagnuolo from Ft. Collins, CO

RT @pushPSDs: Photo: #eclipse viewed from #sanfrancisco (Taken with Instagram at Haight Ashbury)

RT @Astroguyz: Very cool; RT @JPMajor: Impressive #eclipse photo from Taipei City, Taiwan (check it out @BadAstronomer)

RT @JPMajor: Managed to grab a photo of tonight's #eclipse from Dallas, Texas! Taken at 8:15 pm @BadAstronomer @UniverseToday

RT @ferrisjabr: You know those amazing photos of the gelatinous, translucent caterpillar? I contacted some entomologists to learn more:

Shadow Fire: 10 Fantastic Photos of Sunday's Annular Solar Eclipse

RT @b0yle: Watching a wonderful annular solar #eclipse at the Allen Telescope Array in N. Calif.:

RT @Joshwoos: 2012 #annular #eclipse @ Clifton, TX

RT @DNLee5: Getting ready for the Annular Eclipse May 20, 2012

Annular Eclipse Hits U.S. Sunday

Annular Solar Eclipse Will Be Viewable in U.S. Sunday