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Can nutrition rating systems be used in supermarkets to encourage healthier spending habits? A new study by Cornell University researchers sought to answer that very question by tracking the purchasing records in a supermarket chain that uses the Guiding Stars System to rate the nutritional value of foods for sale.

Tropical Storm Karina continues to weaken in the Eastern Pacific over open waters, and NASA data shows there's not much punch left in the storm.

NASA's Tropical Rainfall Measuring Mission or TRMM satellite can measure the rate of rainfall from its orbit in space and when it passed over Tropical Storm Karina in the Eastern Pacific it saw an isolated area of heavy rain remaining in the storm.

Global warming is currently taking a break: whereas global temperatures rose drastically into the late 1990s, the global average temperature has risen only slightly since 1998 – surprising, considering scientific climate models predicted considerable warming due to rising greenhouse gas emissions. Climate sceptics used this apparent contradiction to question climate change per se – or at least the harm potential caused by greenhouse gases – as well as the validity of the climate models.

TEMPE, Ariz. – An Arizona State University alumna has devised the largest catalog ever produced for stellar compositions. Called the Hypatia Catalog, after one of the first female astronomers who lived ~350 AD in Alexandria, the work is critical to understanding the properties of stars, how they form, and possible connections with orbiting planets. And what she found from her work is that the compositions of nearby stars aren't as uniform as once thought.

Astronomers have uncovered rhythmic pulsations from a rare type of black hole 12 million light-years away by sifting through archival data from NASA's Rossi X-ray Timing Explorer (RXTE) satellite.

Since Tropical Storm Karina weakened from hurricane status, and since then, NASA satellite data has shown that the storm has been pretty consistent with strength and thunderstorm development.

Just about every parent is familiar with the signs: the crying, the stomping feet and pouting lips, all of which are usually followed by a collapse to the floor and a wailed insistence that, "It's not fair!"

Since Tropical Storm Karina weakened from hurricane status, and since then, NASA satellite data has shown that the storm has been pretty consistent with strength and thunderstorm development.

There is nothing like a head cold to make us feel a little dazed. We get things like colds and the flu because of changes in our immune system. Researchers have a good idea what causes immune system changes on Earth—think stress, inadequate sleep and improper nutrition.

New York, NY—August 18, 2014—The web can be an opaque black box: it leverages our personal information without our knowledge or control. When, for instance, a user sees an ad about depression online, she may not realize that she is seeing it because she recently sent an email about being sad. Roxana Geambasu and Augustin Chaintreau, both assistant professors of computer science at Columbia Engineering, are seeking to change that, and in doing so bring more transparency to the web.

The universe has so many black holes that it's impossible to count them all. There may be 100 million of these intriguing astral objects in our galaxy alone. Nearly all black holes fall into one of two classes: big, and colossal. Astronomers know that black holes ranging from about 10 times to 100 times the mass of our sun are the remnants of dying stars, and that supermassive black holes, more than a million times the mass of the sun, inhabit the centers of most galaxies.

Bragging of sexual conquests, suggestive jokes and innuendo, and sexual one-upmanship can all be a part of demonstrating one's manhood, especially for young men eager to exert their masculinity.

But how does masculinity manifest itself among young men who have pledged sexual abstinence before marriage? How do they handle sexual temptation, and what sorts of challenges crop up once they're married?

Tropical Storm Julio doesn't have any strong thunderstorms or strong convection left in it according to infrared satellite imagery from NASA.

When NASA's Aqua satellite passed over Tropical Storm Julio on August 14 at 12:23 UTC (8:23 a.m. EDT), the Atmospheric Infrared Sounder known as AIRS analyzed the clouds and temperatures of the storm. The AIRS data showed that cloud tops had warmed and dropped lower in the atmosphere. That indicates that the strength behind rising air had weakened and was not forming strong, high thunderstorms with cold cloud tops.

We may joke about looking for a needle in a haystack, but that's nothing compared to searching for stardust in a foil! A new paper published in Science reveals that such work has led to the discovery of seven dust particles that are not only out of this world, they're out of this solar system.

NASA's Terra satellite passed over Hurricane Karina before it weakened to a tropical storm early on August 15 and imagery showed the vertical wind shear was already taking its toll.