Katie Greene

All Stories by Katie Greene

  1. Astronomy

    Ring around the galaxy

    The Hubble Space Telescope has captured the largest number ever of elliptical galaxies with Einstein rings, a marker of gravitational lensing.

  2. Planetary Science

    Mars or Bust!

    Scientists are working to overcome the biomedical challenges that would hinder a human voyage to Mars.

  3. Tech

    Hidden in Disorder: Chaos-encrypted information goes the distance

    Scientists have demonstrated that a message encrypted in a chaotic laser signal can be transmitted more than 100 kilometers through a commercial optical-fiber network.

  4. Health & Medicine

    Our big fat cancer statistics

    A new analysis of data from a 2002 report shows that obesity is the second-largest cause of cancer in the United States.

  5. Health & Medicine

    Wearing your food

    A broccoli extract, applied to the skin, has been found to reduce the incidence of skin tumors in mice.

  6. Health & Medicine

    Protective Progeny: Peptide treats and prevents breast cancer

    A synthetic version of a protein present in a woman's body during pregnancy is as effective against breast cancer as the current drug tamoxifen is, according to a study in rodents.

  7. Read My Gestures: Body language can trump facial expressions

    Body language can influence the perception of emotion on a person's face.

  8. Macho Makeover: Fish rapidly ascend social ladder

    Some male fish can upgrade their social status, and their appearance, in a matter of minutes.

  9. Computing

    Untangling a Web: The Internet gets a new look

    A new mathematical model of the Internet shows that it may not be as vulnerable to centralized attacks as previous research suggested.

  10. Health & Medicine

    Better Beta: Cells grown in lab may treat diabetes

    Scientists have developed a technique to mass-produce a type of pancreas cell needed for transplants into people with type 1 diabetes.

  11. Earth

    Pack Rat Piles: Rodent rubbish provides ice age thermometer

    Analyses of fossilized plant remnants collected by pack rats reveal that the Grand Canyon was much cooler than previously thought during the latter part of the last ice age.

  12. Forever Young: Digging for the roots of stem cells

    Three proteins have been shown to function as master regulators that shut off differentiation and enable stem cells to retain their capacity to develop into any type of cell.