The icy landscape of the Arctic as we imagine it will no longer exist in just a few decades, researchers returning from a major expedition to the frozen north have warned.
“This world is threatened. We really saw how the ice is disappearing,” said Markus Rex, leader of the largest-ever Arctic expedition, at a press conference Monday.
Researchers involved in the expedition called MOSAiC — Multidisciplinary drifting Observatory for the Study of Arctic Climate — returned on the German vessel, the Polarstern, which spent more than a year at sea.
For much of the mission, the Polarstern was carried by the natural ice drift, pushed on by the wind, while researchers from 20 countries collected data about the environment and climate change. No other expedition to date has been able to collect similar evidence from the center of the Arctic, with the vessel spending weeks within 125 miles of the
Golnaz Arastoopour Irgens, assistant professor in Clemson’s education and human development department. Image Credit: College of Education
A Clemson University faculty member will use an award from the National Science Foundation (NSF) to examine middle school students’ data science knowledge and practices through the lens of social issues and gauge students’ sense of empowerment to positively change communities through data science.
Golnaz Arastoopour Irgens, assistant professor of learning sciences in the Clemson University College of Education, said it is a common misconception that data is neutral or free from the influence of social issues or that data has no effect on social issues. She said it is often the case that technology informed by data science, such as search engines or facial recognition software, has been shown to either reinforce discrimination or mischaracterize minority groups.
Because humans design these forms of technology and many more make decisions based on them,
Intel Macs that use Apple’s T2 Security Chip are vulnerable to an exploit that could allow a hacker to circumvent disk encryption, firmware passwords and the whole T2 security verification chain, according to a cybersecurity researcher.
Apple’s custom-silicon T2 co-processor is present in newer Macs and handles encrypted storage and secure boot capabilities, as well as several other controller features. In a blog post, however, security researcher Niels Hofmans claims that because the chip is based on an A10 processor it’s vulnerable to the same checkm8 exploit that is used to jailbreak iOS devices.
This vulnerability is reportedly able to hijack the boot process of the T2’s SepOS operating system to gain access to the hardware. Normally the T2 chip exits with a fatal error if it is in Device Firmware Update (DFU) mode and it detects a decryption call, but by using another vulnerability developed by team Pangu, Hofmans
Tesla’s new 4680 battery cell is an “A-plus” design according to Shirley Meng, a scientist from the University of California San Diego.
But she added that Tesla can’t achieve is ambitious goals by itself — to get to ten terawatts of worldwide capacity, other players will be required.
“The world needs so many batteries,” she said.
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Tesla’s Battery Day this week brought big news to the metallurgy and chemical-engineering worlds: the company had developed a new cylindrical battery cell, dubbed the “4680,” that’s much larger than the 2170 cells it’s currently using.
While the 4680 cells remain at the prototyping stage and shouldn’t enter mass production until 2022, CEO Elon Musk and his engineers are confident enough in the new form factor to start rethinking the design of Tesla’s cars, with the 4680 cells becoming a structural feature.
Researchers at the University of Alberta have discovered a novel, second mechanism of action by the antiviral drug remdesivir against SARS-CoV-2, according to findings published today in the Journal of Biological Chemistry.
The research team previously demonstrated how remdesivir inhibits the COVID-19 virus’s polymerase or replication machinery in a test tube.
Matthias Götte, chair of medical microbiology and immunology in the Faculty of Medicine & Dentistry, likened the polymerase to the engine of the virus. He said the first mechanism the team identified is like putting diesel fuel into an engine that needs regular gasoline.
“You can imagine that if you give it more and more diesel, you will go slower and slower and slower,” he said.
The newly identified mechanism is more like a roadblock, “so if you want to go from A to B with the wrong fuel and terrible road conditions, you either never reach B