• New hope for AIDS vaccine: Llamas? Monday, 23 Feb 2015 | 11:31 AM ET
    A Llama in Cusco, Peru

    Llamas appear to be immune to AIDS and HIV, giving scientists hope for developing a vaccine or treatment. Global Post reports.

  • Space station preps for 'space taxis' Friday, 20 Feb 2015 | 4:27 PM ET
    The mirrorlike visor of NASA astronaut Reid Wiseman reflects fellow astronaut Barry Wilmore during their Oct. 15, 2014, spacewalk outside the International Space Station.

    A spacewalk to prep the International Space Station for commercial spacecraft was delayed, but plans to reopen the American docks will go on.

  • What serious problem rhymes with orange? Thursday, 19 Feb 2015 | 1:27 PM ET
    Oranges hang from trees at an orange grove in Winter Garden, Florida.

    A cold snap in Florida may threaten next year's citrus crop, and California growers are fighting for their future.

  • Morning headlines: Wal-Mart offers raises  Thursday, 19 Feb 2015 | 10:29 AM ET

    Wal-Mart will raise its minimum wage for entry level workers, and will give raises to nearly 40 percent of its workforce. CNBC's Kate Rogers has this morning's top headlines.

  • UMass reverses ban on Iranian science students Wednesday, 18 Feb 2015 | 2:20 PM ET
    UMass Amherst students on campus.

    UMass reversed a controversial policy change and continue to accept Iranian nationals into science and engineering programs, NBC News reports.

  • AMHERST, Mass.— The University of Massachusetts at Amherst said Wednesday that it has reversed its decision to ban Iranian nationals from admission to certain graduate programs in engineering and science. Officials said then that the move aligned school policy with U.S. sanctions against Iran but said Wednesday it has since consulted further with the State...

  • Road salt: The winter's $2.3 billion game changer Wednesday, 18 Feb 2015 | 1:49 PM ET
    A garbage truck which slid off a road in Gorham, Maine.

    The economics surrounding a certain commodity can be a game changer for city officials in the snow belt. And it's sitting on your dinner table.

  • Why pot gives people the 'munchies' Wednesday, 18 Feb 2015 | 12:16 PM ET

    Marijuana might make brain cells that normally suppress the appetite reverse their behavior and encourage eating, says a new study.

  • Ron Klain, former U.S. Ebola czar, explains the safety and importance of vaccinating children to protect against measles.

  • Re/code's Kara Swisher talks to President Obama about STEM, education and bringing the best workers to the US. He also talks about immigration reform as a way to make it easier for companies to bring in talent.

  • How bad are US droughts? Think 'megadrought' Friday, 13 Feb 2015 | 2:01 PM ET
    Dried and cracked earth on an unplanted field at a farm near Mendota, Calif.

    Harsh droughts lasting decades are likely to dry out a broad swath of America's heartland, even if we reduce carbon emissions in the next 50 years, researchers say.

  • WASHINGTON, Feb 12- The world's oceans are clogged with plastic debris, but how much of it finds its way into the seas annually? China was responsible for the most ocean plastic pollution per year with an estimated 2.4 million tons, about 30 percent of the global total, followed by Indonesia, the Philippines, Vietnam, Sri Lanka, Thailand, Egypt, Malaysia, Nigeria and...

  • Oceans filling with plastic may make toxic seafood Thursday, 12 Feb 2015 | 2:23 PM ET
    Trash on Carpayo Beach in La Punta, Peru, December 02, 2014.

    Coastal countries are leaking millions of tons of plastic into the oceans every year, says a new study. And it is getting tougher to remove.

  • Hospitals cut costs with 'creepy' robots Thursday, 12 Feb 2015 | 1:09 PM ET
    The Tug robot by Aethon

    Hospitals near San Francisco are using robots to ferry food, drugs and even dirty laundry, possibly saving patients money, and maybe stealing jobs.

  • Apple has a new solar farm, and greens hate it Wednesday, 11 Feb 2015 | 2:27 PM ET
    A contractor for First Solar Inc. work on construction of a solar project in Imperial County, California.

    Some environmental groups are taking issue with First Solar's new farm, in which Apple is making a big investment.

  • 'Bionic leaf' makes liquid fuel from sunlight Wednesday, 11 Feb 2015 | 1:47 PM ET

    Biologists have developed a way to make burnable liquid fuel out of sunlight, by mimicking the way plants derive energy from the sun.

  • Some African nations better vaccinated than US Monday, 9 Feb 2015 | 2:19 PM ET
    A child from the Central African Republic receives a measles vaccination at a refugee camp set up by the UNHCR in Nangungue, eastern Cameroon on April 12, 2013

    Several African countries report vaccination rates higher than that of the U.S., a survey found.

  • ZUEHL, Texas, Feb 6- Texas rancher Jim Rackley would like to add more cattle to his herd of about 50 to take advantage of sizzling beef prices and growing demand from health-conscious consumers for his grass-fed beef. But the prospect of cloudless skies keeps him cautious. "Every time we think we're coming out of the drought, we get hit again,' said Rackley, a former high...

  • The Falcon 9 rocket is targeted for launch at 6:10 p.m. EST from Cape Canaveral Air Force Station in Florida. Perched on top of the booster is the Deep Space Climate Observatory, nicknamed DSCOVR, and jointly owned by NASA and the National Oceanic and Atmospheric Administration. The satellite, then called Triana- and lampooned as "GoreSat"- was due to launch on the...

  • Map: Where California's unvaccinated people live Friday, 6 Feb 2015 | 2:34 PM ET
    Vials of measles, mumps and rubella vaccine are displayed on a counter at a Walgreens Pharmacy on January 26, 2015 in Mill Valley, California.

    Outbreaks of measles and whooping cough in California have rekindled debates over "anti-vaxxers"——here is a map of where they live.