All Stories
- Health & Medicine
Urine test may improve prostate screening
Levels of two biomarkers might clarify whether a man with an iffy PSA score needs to get a biopsy, a study finds.
- Earth
Marine microbes prove potent greenhouse gas emitters
Earth’s oceans emit an estimated 30 percent of the nitrous oxide, or N2O, entering the atmosphere. Yet the source of this potent greenhouse gas has puzzled scientists for years. Bacteria — long the leading candidate — can generate nitrous oxide, but the seas don’t seem to contain enough to account for all of the nitrous oxide that the marine world has been coughing up. Now researchers offer a better candidate.
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- Space
Atom & Cosmos
Trojan asteroids, black hole interactions and a gargantuan watering hole in this week’s news.
- Materials Science
Now, an invisibility cloak you can see
Physicists have developed a device that can hide objects in visible wavelengths.
- Life
A cougar in Connecticut
Using DNA and trailside cameras, wildlife biologists retrace the 18-month, 2,000-mile journey of a young male cat.
- Earth
Eels point to suffocating Gulf floor
In June, scientists predicted that the Gulf of Mexico’s annual dead zone — a subsea region where the water contains too little oxygen to support life — might develop into the biggest ever. In fact, that didn’t happen. Owing to the fortuitous arrival of stormy weather, this year’s dead zone peaked at about 6,800 square miles, scientists reported on Aug. 1 — big but far from the record behemoth of 9,500 square miles that had been mentioned as distinctly possible.
- Life
Wasp has built-in Facebook
An insect species with a tricky social life has a special facility for telling one bug's mug from another.
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In ancient Southwest droughts, a warning of dry times to come
Anything but lush, the U.S. Southwest has been especially parched lately. About a decade ago a cycle of droughts began; the latest one has dried much of the region to a degree that meteorologists expect only twice a century. But look back a millennium or more, and you’ll find signs that today’s conditions are not […]
- Life
DNA switches tied to non-Hodgkin lymphoma
Genetic defects lead to altered activity in other genes.
- Chemistry
Molecules/Matter & Energy
Clear batteries, mucus busters, a 3-D invisibility cloak and more in this week's news.
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