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Wednesday, November 13, 2019

Sand absorbs high-speed projectiles better than steel

If someone is firing projectiles in your direction, you might be safer hiding behind a sand block rather than a steel wall, new research shows. While sand has long been used in military fortification, limited...

Genetically modified mosquito doesn’t catch dengue

Researchers have genetically modified mosquitoes in the lab to resist infection from dengue, a virus that each year sickens an estimated 96 million people globally and kills more than 20,000, mostly children. The project, summarized...

How invasive species are like drunk people walking

A theory that uses the mathematics of a drunken walk may describe ecological invasions better than waves do. The ability to predict the movement of an ecological invasion is important because it determines how resources...

It’s not clear why extreme tornado outbreaks are on the rise

The increase in large-scale tornado outbreaks in the US doesn’t appear to be clearly linked to climate change, a new study suggests. The new findings tie the growth in frequency to trends in the vertical wind...

What a pal! Pluto’s moon blocks solar wind

Pluto’s relationship with its moon Charon is one of the more unusual interactions in the solar system due to Charon’s size and proximity. It’s more than half of Pluto’s diameter and orbits only 12,000 or...

Why queasy rides in ‘space chair’ are totally disorienting

Imagine you’re a jet fighter pilot being chased by a heat-seeking missile. You undertake evasive maneuvers, climbing and nose-diving, performing barrel rolls and loops, and sharply banking left and right. Your speed is around...

Weird radio bursts are from 3 billion light-years away

Researchers have uncovered the source of mysterious cosmic radio waves known as “fast radio bursts.” The bursts were first seen about 10 years ago, and scientists suspected they were coming from within the Milky...

Compound cuts melanoma’s spread by up to 90%

Scientists have discovered that a chemical compound—and potential new drug—reduces the spread of melanoma cells by up to 90 percent. The synthetic, small-molecule drug compound goes after a gene’s ability to produce RNA molecules and...

Why birds in new suburbs get ‘divorced’

Urban sprawl is kicking a group of songbirds called “avoiders” out of their territory, forcing divorce, and stunting their ability to find new mates and reproduce successfully, even after relocating. “The hidden cost of suburban...

The center of N. America is a town called ‘Center’

Figuring out the geographic center of a state, country, or a continent it harder than it sounds. Do you include water in your calculation? What about islands? What happens when the shoreline shifts? The US...
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