As human development continues to encroach on nature, there’s now a proven solution for how wildlife and highways can peacefully co-exist. Wildlife crossings are commonly used to protect the migration routes of various species. A new study published in the Proceedings of the Royal Society B presents the first evidence that they actually work, according to Discover Magazine.
Focusing on the Bow Valley area of Banff National Park in Canada, researchers spent three years studying how grizzly and black bears used the wildlife crossings. During a highway expansion project in the 1990s, crews built two overpasses and 23 underpasses to preserve the free movement of wildlife through the popular park. From over 10,000 DNA samples collected in the area, researchers determined the highway crossings were not only busy for bears, they helped them to find mates.
Image credit: USFWS Mountain Prairie/Flickr
It marks another milestone in SpaceX's long-standing effort to make spaceflight cheaper.
- SpaceX launched Falcon Heavy into space early Tuesday morning.
- A part of its nosecone – known as a fairing – descended back to Earth using special parachutes.
- A net-outfitted boat in the Atlantic Ocean successfully caught the reusable fairing, likely saving the company millions of dollars.
Controversial map names CEOs of 100 companies producing 71 percent of the world's greenhouse gas emissions.
- Just 100 companies produce 71 percent of the world's greenhouse gases.
- This map lists their names and locations, and their CEOs.
- The climate crisis may be too complex for these 100 people to solve, but naming and shaming them is a good start.
The world's richest people could breeze through a climate disaster – for a price.
- A new report from a United Nation expert warns that an over-reliance on the private sector to mitigate climate change could cause a "climate apartheid."
- The report criticizes several countries, including the U.S., for taking "short-sighted steps in the wrong direction."
- The world's poorest populations are most vulnerable to climate change even though they generally contribute the least to global emissions.
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