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Health & Medicine

HIV in breast milk can be drug resistant

HIV-positive women who receive the drug nevirapine during pregnancy often have HIV that is resistant to the drug in their breast milk after they give birth.

Health & Medicine

Designer RNA stalls hepatitis in mice

Using strips of synthetic RNA that interfere with normal gene action, scientists working with mice have stopped the progression of hepatitis.

Materials Science

Ceramic rebounds from stressful situations

The ceramic titanium silicon carbide can fully recover after being compressed to a degree that would leave most ceramics shattered and most metals permanently deformed.

Chemistry

A safer antioxidant?

Scientists have developed a synthetic antioxidant that won't, at high doses, foster the tissue damage the compounds are meant to prevent.

Tech

Worms may spin silk fit for skin

Silk cocoons could become puffs of valuable human proteins if a new bioengineering method pans out.

Astronomy

Mature Before Their Time

Some galaxies were in place and forming stars at a prolific rate when the universe, now 13.7 billion years old, was just an 800-million-year-old whippersnapper.

Physics

New equation fits nitrogen to a T

An elaborate, new equation that yields more accurate values for nitrogen's properties might have a multimillion-dollar impact in the cryogenic fluids industry.

Physics

Gecko toes tap intermolecular bonds

For scurrying upside down on smooth ceilings and other gravity-defying feats, lizards known as geckos may exploit intermolecular forces between the surface and billions of tiny stalks under their toes.

Health & Medicine

Stress and sleepless nights

Insomnia is associated with increases in stress hormones, boosts that persist all day and night.

Health & Medicine

Gene causes body-fat disorder

A gene linked to a form of muscular dystrophy also causes a disease that deposits fat unevenly after puberty.