Credit Michael Benson / NASA/JPL/University of Arizona/Kinetikon Pictures
You are 200 miles directly above the Martian surface — looking down. This image was taken by the Mars Reconnaissance Orbiter on Jan. 27, 2010. (The color was added later.) What do we see? Well, sand, mostly. As you scroll down, there's a ridge crossing through the image, then a plain, then dunes, but keep looking. You will notice, when you get to the dunes, there are little black flecks dotting the ridges, mostly on the sunny side, like sunbathing spiders sitting in rows. Can you see them?
Originally published on Thu October 4, 2012 8:53 am
Stefano Amabili walks under the sun in Miami Beach, Florida, in May. The Center for Disease Control and Prevention has found that more people are using sunscreen and protecting themselves from the sun's rays.
Credit Joe Raedle / Getty Images
A sunny day at the beach has plusses and minuses for your health.
A little bit of sun can help your body produce vitamin D, but the sun's ultraviolet radiation raises your risk for skin cancer. And, it turns out, UV radiation poses another threat — it physically weakens your skin.
Adam Greenberg of the Miami Marlins hugs manager Ozzie Guillen after striking out against the New York Mets.
Credit Marc Serota / Getty Images
It's rare that a batter receives a standing ovation for a three-pitch strikeout. But that's exactly what happened last night in Miami.
Adam Greenberg came to the plate in a big-league uniform seven years after his only major-league at bat. As Mark told us last week, Greenberg was a Chicago Cub in 2005 making his major league debut against the Marlins.
Originally published on Wed October 3, 2012 10:11 am
At a fusion center in Las Vegas workers like Daniel Burns, a program coordinator, analyze suspicious activity reports.
Credit Monica Lam / Center for Investigative Reporting
An effort to share counter-terrorism intelligence across federal and local law enforcement has turned out to be a useless and expensive exercise that also put Americans' civil liberties at risk, a newly-released Senate subcommittee report (pdf) finds.
The scathing nature of the report is perhaps best summed up by the testimony of Harold "Skip" Vandover, who headed the reporting branch of the Department of Homeland Security.
University student Dia Mohamed gets a wireless microphone put on his tie as he stands in for President Barack Obama during rehearsal for the first presidential debate in the Ritchie Center at the University of Denver on Tuesday.
Credit Chip Somodevilla / Getty Images
Good morning! The big story today is of course the first presidential debate between President Obama and former Massachusetts Gov. Mitt Romney.
The big picture is that this is Romney's opportunity to tighten a race with a little more than a month to go before the Nov. 6 elections.
Students wait in line to vote last Friday on the campus of the University of Northern Iowa in Cedar Falls, a day after the swing state began in-person early voting.
Credit Scott Olson / Getty Images
Generation Y is asking why.
Why is it so hard to find a job? Why is health care so expensive? Smart questions from a smart generation. Their inquiries — and the presidential candidate they think can provide the best answers — could be a decisive factor in the 2012 election. If not the Tipping Point, as least a Tilting Point.
For many millennials, economic prospects are murky.