Scientists detected the first long-predicted gravitational wave in 2015, and since then, researchers have been hungering for better detectors. But the Earth is warm and seismically noisy, and that will always limit the effectiveness of Earth-based detectors.
The impact of human activities—such as greenhouse gas emissions and deforestation—on Earth's surface have been well-studied. Now, hydrology researchers from the University of Arizona have investigated how humans impact Earth's deep subsurface, a zone that lies hundreds of meters to several kilometers beneath the planet's surface.
Over the last 25 years, the ozone hole which forming over Antarctica each spring has started to shrink.
I first encountered the three-body problem 60 years ago, in a short story called "Placet is a Crazy Place" by American science fiction writer Frederic Brown.
In the two decades to 2019, global plastic production doubled. By 2040, plastic manufacturing and processing could consume as much as 20% of global oil production and use up 15% of the annual carbon emissions budget.
An international team of archaeologists and archaeogenetics specialists, working with the Hungarian National Museum, has discovered a network of Avar pedigrees and community social practices after conducting a DNA study of the remains of people who once lived in what is now a part of Hungary.