Hawking warns Trump’s decision to leave the Paris Climate Agreement could lead to irreversible climate change, turn Earth into a hothouse planet like Venus.
Researchers affiliated with several institutions in Japan and Germany have found evidence that suggests the middle of Earth's mantle holds as much water as the planet's oceans. In the study published in the journal Science Advances, researchers write that the uppermost part of the mantle and lower part closest to the core are relatively “water free” because their dominant minerals, “olivine and bridgmanite,” have limited water storage capacity. However, the layer in between (the mantle transition zone [MTZ] at 410 to 660 kilometers below the surface) could harbor massive amounts of water because it is dominated by the minerals "wadsleyite and ringwoodite," which are known to be able to hold a lot of water.
On April 18, the Mauna Loa Observatory in Hawaii, recorded that carbon levels in the atmosphere have exceeded the 410 ppm threshold for the first time in history. Last year, when the earth’s atmospheric CO2 levels were at 400 ppm, scientists predicted that the next milestone of 410 ppm was coming.
The impact of humans on the planet is so profound that we are responsible for driving a new burst of evolution for millions of species including possibly our own. Since human beings have become the dominant influence on the planet, observable even in the geological record, some scientists have urged that our period in history should be nicknamed the ‘Anthropocene.’
How did dinosaurs really die? Researchers reconstruct how formation of tiny droplets of sulfuric acid high up in the air after the well-known impact of a large asteroid and blocking the sunlight for several years and cooling down the earth, ended the reign of the dinosaurs.
Have you ever wondered where the foam in the ocean comes from? Or why the sea can look clear on some days and green, brown, or even pink on others? And how fish get the ingredients to make those omega-fatty acids that we’re told are so good for us? Well, the single word answer to all of these questions is: “plankton”.
The world's most powerful earthquakes are more likely to occur at times of a full or new Moons. At this time, the tidal stresses on earth are highest due the gravitational pull from the moon.
The best way to save earth is by bringing erosion back into balance with the rate at which soil forms. And this can be achieved by plowing less often, and leaving plant parts behind or plant so-called ‘cover crops’ to cover the soil for the enrichment and protection against water and wind.
A canyon in the eastern part of the Himalayas is moving slowly northward due to pressure from tectonic lift. Previously, scientists believed that erosion was the main driver of the migration. But with a cutting-edge mineral-dating technique called optically stimulated luminescence (OSL) thermochronometry, they were able to confirm that it was due to tectonic shifting.