Tag Archives: Smithsonian

These Non-Lethal Methods Encouraged by Science Can Keep Wolves From Killing Livestock

SMITHSONIAN

Experts say old, repurposed techniques and new technologies may be better than bullets at curbing attacks by the predators

Nestled amid butterscotch-scented Ponderosa pines in Idaho’s backcountry one sunny, summer day in 1991, Suzanne Stone scooped her hands around her chin and let out an “Ahwooooo.” Stone, now an expert in wolf restoration heading the International Wildlife Coexistence Network, was then an intern at the United States Fish and Wildlife Service (USFWS). After she sent two boisterous wolf howls rippling through nearby meadows, she listened curiously for a reply. Instead, a bullet from a distant rifle whistled just above her and her supervisor’s heads. Steve Fritts, a leading wolf scientist at USFWS, hurried Stone back to their car before reporting what happened. Hunting was legal in the area, but firing at federal employees—even unknowingly—was not. Federal investigators later traced the shot to a hunting outfitter hundreds of yards away.

“I knew then what wolves were facing in the backcountry,” she says. For nearly three decades, wolf populations in Idaho have been on the rise, pitting local communities and powerful interest groups against each other, a situation that plays out in many areas across the country where wolves exist. Hunters contend that wolves have fully recovered and now deplete elk and deer populations while some ranchers argue wolves need to be killed to keep livestock alive. Conservationists, on the other hand, say that the apex predators contribute vitally to a healthy ecosystem and are still functionally extinct in about 85 percent of their historic range.

In October, the Trump administration delisted gray wolves from the endangered species list, a move celebrated by the National Cattlemen’s Beef Association and Safari Club International, a hunter advocacy group, in a joint statement. The conservationist group Defenders of Wildlife, meanwhile, issued a statement of their own calling the delisting “premature and reckless.” They have joined other conservation groups to file a formal intent to sue the USFWS soon after the law takes effect in January.

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Scientists Discover Exposed Bacteria Can Survive in Space for Years

SMITHSONIAN

An experiment conducted outside the International Space Station leads to a controversial theory about how life might travel between planets

Framed by an infinite backdrop of dark, lifeless space, a robotic arm on the International Space Station in 2015 mounted a box of exposed microbes on a handrail 250 miles above Earth. The hearty bacteria had no protection from an onslaught of cosmic ultraviolet, gamma, and x-rays. Back on Earth, scientists wondered whether the germs might survive these conditions for up to three years, the length of the experiment, and if they did, what the results might tell the researchers about the ability of life to travel between planets.

Microbiologists have spent decades studying extremophiles, organisms that endure extreme conditions, to tug at the mysterious threads of how life blossomed on Earth. Some extremophiles can live unprotected in space for several days; others can endure for years, but only by carving out a home inside rocks. These findings underpin the theory that life as we know it can transfer between planets within meteorites or comets. Now, new findings published today in Frontiers in Microbiology, based on that experiment on the International Space Station, show that the bacteria Deinococcus radiodurans can survive at least three years in space. Akihiko Yamagishi, a microbiologist at Tokyo University of Pharmacy and Life Sciences who led the study, says the results also suggest that microbial life could travel between planets unprotected by rock.

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To Make Oxygen on Mars, NASA’s Perseverance Rover Needs MOXIE

SMITHSONIAN

A new tool from the space agency may produce the gas, completing the next step for planning a round trip voyage

Putting boots on Mars isn’t easy, but it’s a lot easier than bringing them back.

This week, NASA launches its Perseverance rover on a one-way trip to the surface of Mars. Among many other tools, the craft carries an experimental instrument that could help astronauts in the future make roundtrip voyages to the planet. The Mars Oxygen In-Situ Resource Utilization Experiment, or MOXIE, is small, about the size of a car battery. It’s designed to demonstrate a technology that converts carbon dioxide into oxygen with a process called electrolysis. Mars’ thin atmosphere is 95 percent carbon dioxide, but sending anything back into space requires fuel, and burning that fuel requires oxygen. NASA could ship liquid oxygen to the planet, but the volume needed takes up a good deal of space.

MOXIE could show the way to a solution.

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Cicadas Are Delightful Weirdos You Should Learn To Love

SMITHSONIAN

As Brood IX takes flight for the first time in 17 years, cicada lovers have their ears open.

Around this time of year, Marianne Alleyne hosts dozens of houseguests in her basement. Far from using camping equipment or cots, they sleep upside-down, clinging to a curtain. The entomologist at the University of Illinois Urbana-Champaign has collected cicadas, those bizarre and misunderstood cyclical insects, for four years.

“In Illinois, we have 20 species, and hardly anything is known about them,” Alleyne says. “We know very little about what they’re doing underground.”

Cicadas have a longstanding reputation as loud, swarming pests that keep obnoxiously particular schedules. In the United States, they got a bad rap from the beginning, as early colonists misidentified these clouds of emerging cicadas as locusts. “They were thought of as a biblical plague,” says John Cooley, an assistant professor in residence at the University of Connecticut. That impression has been a lasting one: a group of cicadas is still referred to as a plague or a cloud. “The question I get the most is ‘How do I kill them?’” Cooley says.

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How Scientists Use Climate Models to Predict Mosquito-Borne Disease Outbreaks

SMITHSONIAN

The ebb and flow of rainy seasons corresponds with the hatching of millions of mosquitoes—and the spread of diseases they carry

Few natural phenomena pose a greater threat to humans than a swarm of mosquitoes erupting from a cluster of soil-lodged eggs. These bloodthirsty menaces can carry a host of diseases, such as Zika, West Nile and malaria, making mosquitoes the world’s deadliest animals.

Mosquito-borne diseases threaten billions of people, and while the diseases vary in biology and geography, most, if not all, are exacerbated by climate change. Scientists predict that a warming world will invite the spread of more mosquitoes, and more illness, threatening a billion more people over the next 60 years. But long-term predictions are hard to act on, and public health experts believe short-term forecasts could better kick-start programs to save people’s lives today.

For the last 20 years, scientists studying weather patterns have pieced together how real-time data can help predict mosquito-borne disease outbreaks weeks or even months before the insects emerge from the ground. These tools may provide a mechanism to prevent millions of deaths, tracking monsoons and other rain cycles to forecast mosquito hatching events.

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