Mother Earth is clearly urging a call to action. Nature is suffering. Oceans filling with plastic and turning more acidic. Extreme heat, wildfires and floods, have affected millions of people.

These sapropel layers are packaged into groups of 4–5 (Figure 4), reflecting the influence of slight changes in the shape of the Earth's orbit around the sun (eccentricity) on modulating the ...

The NEO Surveyor fulfills a 2005 act of Congress ordering NASA to catalog 90% of near-Earth objects larger than 459 feet, which is roughly the size at which an asteroid could take out a city ...