The vast majority of debris in the ocean — about 75 percent of it — is made of plastic. It can consist of anything from plastic bottles to packaging materials, but whatever form it takes, it doesn't go away easily.
While plastic may break down into smaller and smaller pieces, some as small as grains of sand, these pieces are never truly biodegradable. The plastic bits, some small enough that they're called microplastics, threaten marine life like fish and birds, explains Richard Thompson, a professor of marine biology at Plymouth University in the U.K.
The Hubble Space Telescope is being pressed into service to search for a post-Pluto "icy body" as a last stop for NASA's New Horizons probe.
The Baltimore-based committee that metes out observing time for the HST announced today that it is allotting time to look for a suitable Kuiper Belt object for New Horizons to flyby after it passes close to Pluto in July 2015.
A much-maligned beef product that was once frequently added to hamburger is making a comeback. Two years ago, beef processors cut back sharply on producing what they call "lean, finely textured beef" after the nasty nickname for it, "pink slime," caught on in the media. Now, higher beef prices are leading to increased demand for the product.
To prepare, grocery stores and beef processors are getting ready for a new round of questions from consumers.