One has a thick poisonous atmosphere, one has hardly any atmosphere at all, and one is just right for life to flourish – but it wasn't always that way. The atmospheres of our two neighbours Venus and Mars can teach us a ...
Space Exploration
May 14, 2019
0
23
Appearances can be deceiving. This thick, cloud-rich atmosphere rains sulphuric acid and below lie not oceans but a baked and barren lava-strewn surface. Welcome to Venus.
Space Exploration
May 14, 2019
0
14
Permafrost underlies nearly 85 percent of Alaska and nearly a quarter of the landmass in the northern hemisphere. This perennially frozen soil contains twice as much carbon as is found in the Earth's atmosphere. Since the ...
Earth Sciences
Feb 1, 2019
8
188
The Earth's atmosphere and oceans play important roles in moving heat from one part of the world to another, and new research is illuminating how those patterns are changing in the face of climate change.
Earth Sciences
Jan 28, 2019
0
248
Observable effects of climate change that scientists had predicted in the past are now a reality: Glaciers are shrinking, plant and animal ranges have shifted and trees are flowering sooner.
Environment
Nov 20, 2018
0
56
Some people argue that concern for global warming is a modern phenomenon. And that scientists and environmental activists invented these worries to raise awareness of rising greenhouse gases from burning fossil fuels.
Environment
Jun 5, 2018
0
29
Scientists have directly measured the increasing greenhouse effect of methane at the Earth's surface for the first time. A research team from the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley ...
Earth Sciences
Apr 2, 2018
9
597
There are those who say the climate has always changed, and that carbon dioxide levels have always fluctuated. That's true. But it's also true that since the industrial revolution, CO₂ levels in the atmosphere have climbed ...
Environment
Jun 13, 2017
31
121
Carbon dioxide levels measured at NOAA's Mauna Loa Baseline Atmospheric Observatory rose by three parts per million to 405.1 parts per million (ppm) in 2016, an increase that matched the record jump observed in 2015.
Environment
Mar 13, 2017
0
49
The presence of water on ancient Mars is a paradox. There's plenty of geographical evidence that rivers periodically flowed across the planet's surface. Yet in the time period when these waters are supposed to have run—three ...
Space Exploration
Jan 24, 2017
6
607
