A ghostly subatomic particle can be resurrected from the catastrophic encounter of a star with a black hole. Made by the IceCube detector in Antarctica, the neutrino carried 200 trillion electron volts, roughly 30 times more energy than the protons accelerated by the Large Hadron Collider. The scientists compared the detection of neutrinos to the flashes of light in the sky caused by a black hole slicing through a star.
There has been a long-standing debate about when humans first traveled to and from the Americas. A group of researchers reported that people arrived in North America 15,000 years earlier than is generally thought.
Based on the discovery of some 33,000-year-old stone tools found in Mexico. However, some archaeologists suspect that the artifacts are also stone tools and say they are naturally broken rocks.
Another research group reported that indigenous South Americans crossed thousands of miles of open sea and reached eastern Polynesia more than 800 years ago, with settlers from Asia initially colonizing the islands.
This conclusion is based on genetic evidence suggesting that fearless South Americans coexisted with ancient Polynesians. But some anthropologists wonder if early South American groups had the marine tools or skills necessary for the voyage.
After the Notre Dame fire, scientists can take a look at the origins of the cathedral. The April 2019 fire at Notre Dame Cathedral in Paris provided scientists with an opportunity to delve into the cathedral’s history and study the building’s materials, learning more about climate change.
Individual actions around housing, transportation and food can create ripple effects in society to help mitigate the effects of climate change. But to make the most of an impact, people must tailor their efforts to their circumstances. Science News has reported it since the beginning of the COVID-19 pandemic, but none of those stories were on our 2020 most read list. That’s because we think the coverage is unique.