How a new scientific test could help authenticate priceless silk masterpieces. Why art experts are concerned about the future of acrylic paintings. Why it isn’t easy rising to the top in a beehive.

How a new technique could help drugs seek out and destroy the virus that causes AIDS hidden in a nearly impenetrable refuge. Why older people may be getting too much of a good thing in water. How scientists may have found a way to wipe out an unsightly epidemic.

How a pregnancy protein could help doctors detect Alzheimer’s disease in older women; A breath-taking new test could quickly help identify harmful substances, while another new test could help cull out unsafe blood-thinning medication.

A new type of "smart" window could help keep us comfy and lower our electric bills; Why discarded plastic bottles could help prevent poisoning in developing countries; How scientists went against the grain to create a healthier pasta.

How an extinct relative of the elephant could help surgeons save lives; Why panda poop could speed the development of biofuels; How scientists searching for ways to corral farm odors are closing in on the sweet smell of success.

How new high-tech instruments could finally determine if there really is life on Mars;  Why energy production on Mars could be out of this world; why Martian-bound astronauts will need green thumbs.

Why putting a gator in your tank isn’t a croc-pot idea; Scientists are concerned about efforts to jumpstart biofuel production; How newly discovered crystals in a meteorite could help advance electronics.

Paper money and sales receipts may not be good for your health;  New concerns are arising about a common flame retardant and its effects during pregnancy;  Why scientists are scrutinizing sunscreens.

What hidden danger lurks in some swimming pools. How a creek-dwelling creature inspired the development of a new spy gadget. Scientists are closing in on a way to make an improbable movie prop a sight to behold.

Why government scientists say Gulf of Mexico seafood is safe just a year after one of the world’s worst offshore oil disasters.  How seaweed could forestall heart disease. How much smaller can electronic gadgets get?