Scientists use many proxies to reconstruct Earth's ancient climates. Pollen, diatoms, geochemical isotopes and fossils, for example, all contribute to piecing together past-climate puzzles. The ubiquity and wide geographic ...
Earth Sciences
Apr 29, 2021
0
107
Imagine trying to pick up a pebble or scrape microbes off a cave wall in a bulky spacesuit with puffy gloves on, under a time constraint because you don't want to run out of oxygen. That's what the analog astronauts do daily ...
Space Exploration
Apr 28, 2021
1
2263
When the four-decades-old Voyager 1 and Voyager 2 spacecraft entered interstellar space in 2012 and 2018, respectively, scientists celebrated. These plucky spacecraft had already traveled 120 times the distance from the Earth ...
Astronomy
Apr 26, 2021
2
3147
Rewilding—a hands-off approach to restoring and protecting biodiversity—is increasingly employed around the globe to combat the environmental footprint of rapid urbanization and intensive farming. The recent reintroduction ...
Plants & Animals
Apr 26, 2021
0
9
The first emergence and persistence of continental crust on Earth during the Archaean (4 billion to 2.5 billion years ago) has important implications for plate tectonics, ocean chemistry and biological evolution. This happened ...
Earth Sciences
Apr 26, 2021
0
161
Around the world each year, extreme precipitation events cause catastrophic flooding that results in tragic loss of life and costly damage to infrastructure and property. However, a variety of different weather systems can ...
Earth Sciences
Mar 9, 2021
0
47
Indigenous knowledge, including oral histories, mythologies, place names and classification schemes, can span many generations, preserving information that has helped native communities adapt to natural hazards as well as ...
Earth Sciences
Jul 16, 2020
0
59
A new study shows that air pollutants from the smoke of fires from as far as Canada and the southeastern U.S. traveled hundreds of miles and several days to reach Connecticut and New York City, where it caused significant ...
Environment
Jan 22, 2020
1
92
Following the accident at the Fukushima nuclear power plant in March 2011, the Japanese authorities decided to carry out major decontamination works in the affected area, which covers more than 9,000 km2. On December 12, ...
Environment
Dec 12, 2019
0
7
Concentrations of methane, a greenhouse gas about 28 times more potent than carbon dioxide, have risen steadily in Earth's atmosphere since 2007. Although several potential explanations, including an increase in methane emissions ...
Environment
Dec 11, 2019
0
69
