Since last July, NASA's Dawn spacecraft has been orbiting the asteroid Vesta, and capturing images and other data that are providing surprising results to the delight and amazement of researchers. Dawn's mission is to help reveal the processes and conditions that marked the first few million years - the dawn - of the solar system; and the information the spacecraft has collected about Vesta is changing the way scientists think about the formation of our early universe.

What if we could cheaply and efficiently detect a potent new energy source, while also monitoring for environmental safety? Olivier Carriere, a physicist in the Marine Physical Laboratory at the Scripps Institution of Oceanography, and other researchers are using the symphony of sound produced in the ocean to do just that.

Buried more than a kilometer beneath the East Antarctica Ice sheet, the Gamburstev Subglacial Mountains have proven to be a geological puzzle for more than 5 decades. How did these mountains form? When did they form? And what makes this ancient mountain range one of the least-understood tectonic features on Earth?

Humans produce over 260 million tons of plastic each year. Almost a third of that plastic goes into disposable, one-time-use items, and only about 1% of it is recycled globally. Where does the rest of the plastic go? How does it interact with our environment? And how will it impact us in the future? In this month's issue of EARTH Magazine, follow the fate of many plastics as they make their way from our homes to our planet's oceans.