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News
Most extreme female penis is found on cave lice
The most dramatic genital-shape reversal known — females with long, insertable organs and males with corresponding pouches — has turned up in bark lice living in Brazilian caves.A female in each of the four Neotrogla species extends a skinny structure up to 15 percent the length of her body into a genital pocket in the male’s body, reports entomologist Kazunori Yoshizawa of Hokkaido...04/17/2014 - 13:17 Animals, Evolution -
News in Brief
Scent of a fruit fly larva comes from its gut microbes
Fruit fly larvae’s alluring and socially important odor turns out not to come from the flies at all, but from their gut microbes.Scent is a big deal to Drosophila melanogaster fruit flies. Both adults and larvae tend to shun untouched food in favor of clustering where larvae have already fed, researchers at McMaster University in Hamilton, Canada,...04/16/2014 - 18:00 Animals, Microbes -
Science Ticker
Excitons' motions captured in images
Quasiparticles called excitons transfer energy through materials such as solar cells, LEDs, semiconductor circuits and even plant cells. Now, that motion has been observed and captured in images, researchers report April 16 in ...04/16/2014 - 12:45 Quantum Physics -
News in Brief
Triclosan aids nasal invasions by staph
Sneezing out antimicrobial snot may sound like a superpower, but it actually could be a handicap.Triclosan, an omnipresent antimicrobial compound found in products ranging from soaps and toothpaste to medical equipment, is already known to show up in people’s urine, serum and breast milk. It seeps in through ingestion or skin exposure. Now, researchers have found that it gets into snot, too. And...04/15/2014 - 14:46 Health, Microbes, Toxicology -
Science Ticker
Modern hunter-gatherers' guts host distinct microbes
Tanzania’s Hadza hunter-gatherers have guts teeming with bacteria much more diverse than what's found in Italians' intestines. But the foragers don't have Bifidobacterium, which is considered healthy, and do have more Treponema and other microbes that signal disease in Western populations. Hadza men and women even have major differences in their gut microbes.These differences...04/15/2014 - 12:27 Genetics -
News
IPCC calls for swift switch to alternative power
The best scenario for slowing global warming by 2100 requires the world to triple or quadruple by 2050 its use of renewable energy and sources of energy that emit only low amounts of greenhouse gases.The recommendation comes from the Intergovernmental Panel on Climate Change in its third and final report of its fifth...04/13/2014 - 19:49 Climate -
Gory Details
How urine will get us to Mars
Every day, you flush a liter or two of urine down the toilet. Unless you live in one of the dry places considering toilet-to-tap systems, you probably never consider drinking it.But if humans are ever going to get to Mars, we’re going to get there drinking our own pee. Now scientists have built a...04/11/2014 - 16:38 Chemistry -
Wild Things
Lionfish grow wary after culling
The beauty of the lionfish, with its striking stripes and decorative fins, has made the members of the genus Pterois popular for aquariums. That popularity may have led to two species of the fish (P. volitans and P. miles) to make their way into the Atlantic, where they’ve become troublesome invasive...04/11/2014 - 11:30 Animals, Conservation -
Wild Things
Small sperm whale species share a diet
Herman Melville may have made the sperm whale (Physeter macrocephalus) famous with Moby Dick, but there are other good reasons why you may not be familiar with the huge predator’s smaller cousins, the pygmy and dwarf sperm whales (...04/09/2014 - 12:30 Animals -
It's Alive
See-through shrimp flex invisible muscle
Much of the body of a Pederson’s transparent shrimp looks like watery nothing, but it’s a superhero sort of nothing. The shrimp is transparent enough to read through, but it’s not some frail, filmy thing. It’s packed with invisible muscle.Searching for Ancylomenes pedersoni shrimp has a touch of the summer-camp prank about it, being a hunt for something that’s mostly invisible. On a...04/08/2014 - 11:02 Animals