A new study finds that seeing the letter A before an exam can improve a student's exam result while exposure to the letter F may make a student more likely to fail. (Credit: iStockphoto/Stacey Newman)
Military Amputees Brian Frasure, a clinical prosthetist and world-class athlete, speaks to the audience on the last day of the Military Amputees Advances Skills Training workshop at Walter Reed Army Medical Center. Sgt. Sara Wood/U.S. Army 
From CNET:
Photo: Could you go on ice now and be revived around 2050? iStockphoto
The Oasis of the Seas off Fort Lauderdale, Fla., one recent evening.
Professor Brian Cox is helping us understand the solar system.
Eating a high-fat diet around conception increases the odds of giving birth to a boy, while low fat consumption with periods of long fasts favours girls Photo: PHOTOLIBRARY 
The new long-range Taser rifle, which can immobilise a suspect for 20 seconds from 100ft away, with an X26 pistol mounted beneath it.
iPhone
Until now, infrared germanium lasers required expensive cryogenic cooling systems to operate (Source: iStockphoto)
From The Guardian:
The IUCN lists west African giraffes as an endangered species. Conservationists say the rate of new species is slower than diversity loss. Photograph: Graeme Robertson
From The Telegraph:
Professor Hanoch Gutfreund points to the manuscript of Einstein's theory of general relativity. RONEN ZVULUN/REUTERS
This ancient willow tree is the epicenter of the Na'vi people.
Scientists are gaining new insight into the mechanisms that generate huge, steep underwater waves that occur between layers of warm and cold water in coastal regions of the world's oceans. (Credit: iStockphoto/Hunor Tanko)
Two ideas exist on the progression of glaciation on Earth from 716.5 to 630 million years ago. Current evidence suggests the top version: a dynamic snowball Earth in which at least two long-lived glaciations happened during which communication between the ocean and the atmosphere was cut off. In this scenario, as CO2 built up, a hot-house effect ensued resulting in an ice-free planet at 670 and 630 million years ago. Credit: Zina Deretsky, National Science Foundation
Photo: Efficient exotic: Transonic Combustion put its new fuel-injection technology into this sports car, which weighs about as much as a Toyota Prius hybrid and has similar aerodynamics. It’s not a hybrid, but it gets better gas mileage than a Prius. Credit: Transonic Combustion
Image: The human gut is a virtual zoo, full of a wide variety of bacteria, a new study found. And scientists say that's a good thing. The first results of an international effort to catalog the millions of non-human genes inside people found about 170 different bacteria species thriving in the average person's digestive tract. (CBS/AP)
Image: The team's findings could help in the search for other ancient "airbursts" .
Backing old technologies (Image: Bloomberg/Getty)
Assassin Drone Aerovironment's new "Anubis" project sounds eerily similar to the Switchblade drone, seen here Aerovironment 
The iPhone and iPod Touch (collectively) are the fastest-adopted gadget ever. Apple has sold many, many more iPods over the years, but the music players took about two years to pick up steam, as the chart shows. How will the iPad tablet fare? Source: Morgan Stanley / Art: Rich Clabaugh, Staff for The Christian Science Monitor
Photo: Stardust landed back on Earth in January 2006
We can now identify more of those lost
Tic-Tac-Toe's Not On The List! via PC Museum 
Blast Off, Cash Off? Courtesy of NASA 
Duchenne or not Duchenne? (Image: Archive Holdings Inc./Getty)
A touch of evil can bring fitness benefits. Daniel Craig as James Bond in Casino Royale (2006).
Credit: Leonard Lessin / Photo Researchers, Inc.
Photo: Researcher Katey Walter lights a pocket of methane on a lake in Siberia showing just how explosive the greenhouse gas is
The diagram above is known as the 3-D chart of the nuclides. The familiar Periodic Table arranges the elements according to their atomic number, Z, which determines the chemical properties of each element. Physicists are also concerned with the N axis, which gives the number of neutrons in the nucleus. The third axis represents strangeness, S, which is zero for all naturally occurring matter, but could be non-zero in the core of collapsed stars. Antinuclei lie at negative Z and N in the above chart, and the newly discovered antinucleus (magenta) now extends the 3-D chart into the new region of strange antimatter. (Credit: Image courtesy of DOE/Brookhaven National Laboratory)
From Live Science:
From The BBC:
From Discover Magazine:The Mariposa botnet, which first appeared in 2008, was a network of nearly 13 million virus-infected PCs, remotely operated by thieves stealing private information from computers in half the Fortune 1000 companies and 190 countries. Though three men are now in custody, worries over the bot are far from over.
MQ-Mb multirole fighter prepped for a precision strike mission
Getting inside the mind of God (Image: John Lund/Getty)
The growing number of tweets per day (Source: Twitter) 
This image shows dark sand dunes and inverted craters in the Arabia Terra region of Mars. The sand is dark because it was probably derived from basalt. The 'inverted' shape is found on Mars and Earth where erosion has stripped away surrounding topography
An artist's rendering of the moment of impact when an enormous space rock struck the Yucatán peninsula at the end of the Cretaceous Period. (Credit: Don Davis, NASA)
From Live Science:
Photo: HTC was the first manufacturer to use Android in its phones
From Discover Magazine: