DNA as invisible ink can reversibly hide patterns

(PhysOrg.com) -- While most people know of DNA as the building blocks of life, these large molecules also have potential applications in areas such as biosensing, nanoparticle assembly, and building supramolecular structures. ...

Horse-riding changed Eurasia's ethnic profile: studies

Horse domestication changed the face of Eurasia, helping ancient Huns and Mongols supplant western "Indo-European" farmers in an incremental westward drive that also brought Hepatitis B and plague, scientists said Wednesday.

Meteorite may represent 'bulk background' of Mars' battered crust

NWA 7034, a meteorite found a few years ago in the Moroccan desert, is like no other rock ever found on Earth. It's been shown to be a 4.4 billion-year-old chunk of the Martian crust, and according to a new analysis, rocks ...

X-ray 'prism' explores chemical changes at the molecular scale

(Phys.org)—Research at SLAC National Accelerator Laboratory demonstrates that ultrashort, ultrabright X-ray laser pulses can reveal details of chemically important molecules at room temperature and in their natural state. ...

Mars rock touched by Curiosity has surprises

(Phys.org)—The first Martian rock NASA's Curiosity rover has reached out to touch presents a more varied composition than expected from previous missions. The rock also resembles some unusual rocks from Earth's interior.

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