Every piranha has a set of interlocked sharp teeth ready and waiting should something happen to their current set, according to findings published in Evolution & Development. "The new teeth wear the old ones as 'hats' until they are ready to erupt," says Adam Summers, a study co-author.
A Texas high school recently launched a transportation, distribution and logistics program as part of its career and technical education offerings. Under the program, students are eligible to receive production technology and Occupational and Safety and Health Administration certifications.
The crystals of the Geode of Pulpi, a huge cavern shaped like an egg and that can accommodate several people at once, grew largely due to a self-feeding mechanism and a nonstop salt supply, according to findings published in Geology. "To reveal their formation has been a very tough task because ... the large geode of Pulpi is a fossilized environment," said study author Juan Manuel Garcia-Ruiz.
Extreme snowy conditions in Greenland prevented almost all plants and animals from breeding in 2018, according to findings published in PLOS Biology. Researchers don't know if this is a one-time event or if it might repeat because of climate change, leading to the possible extinction of some species.
A Minnesota school district recently received a $50,000 grant it plans to use to support an automotive academy. Local auto companies will serve as mentors for the program, which will enroll high-school students.
The AAG recently wrote a letter requesting that the Chinese government halt the execution of Tashpolat Tiyip, a geographer and former president of Xinjiang University. Tiyip disappeared in 2017 when he was preparing to fly from China to Berlin, and academics believe he may face imminent execution. "Tashpolat Tiyip's arrest, detention and death sentence is a devastating threat to intellectual and scientific freedom in China and around the globe," notes Gary Langham, executive director of the AAG.
A deal made between Greenpeace and meatpackers 10 years ago was intended to prevent some of the fires the Amazon is currently experiencing, but certain elements of the deal were not fulfilled, according to environmentalists and academics. "The agreement has so many holes, the deforestation is still just going on," said geographer Holly Gibbs of the University of Wisconsin.
NASA may have astronauts Christina Koch and Jessica Meir conduct their spacewalk, which will be the to be taken by an all-female team, this week instead of Monday. Officials say they are moving things up because of problems with one of the International Space Station's power controllers.
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