MIKI, Japan, July 10 (UPI) -- The largest earthquake simulation ever performed on a wood building could yield data on how to protect homes and apartments, U.S. and Japanese engineers said.

DURHAM, N.C., July 10 (UPI) -- Children often reach the age of 3 before being diagnosed with fragile X syndrome, an inherited form of intellectual disability, U.S. scientists said.

EDINBURGH, Scotland, July 10 (UPI) -- The discovery of a mutant gene that doubles the risk of allergies could lead to therapies that would prevent severe cases of asthma, Scottish scientists said.

LOS ANGELES, July 10 (UPI) -- Tremors deep within the San Andreas Fault suggest California should not become complacent about future earthquakes, a leading seismologist said.

ORLANDO, Fla., July 9 (UPI) -- Most unmarried U.S. couples who live together aren't trying to test their relationship -- they just want to spend more time together, a multiyear study found.

SAN FRANCISCO, July 9 (UPI) -- Scientists in San Francisco said a team of divers has been recruited to rid marinas of an exotic form of fast-growing seaweed.

WASHINGTON, July 9 (UPI) -- NASA and the Canadian Space Agency are inviting the public to see an ongoing international research project investigating the origin of rare carbonate rocks.

NASA: Spirit still stuck in Martian sand ... Antacid drugs may lead to dependency … Frozen carbon a climate change threat … Cancer, non-cancer cells have similarities ... Health/Science news from UPI.

WUHAN, China, July 9 (UPI) -- A Chinese team of scientists has identified the protein composition of venom from the Scorpiops jendeki scorpion.

CANBERRA, Australia, July 9 (UPI) -- An Australian-led team of scientists says it has determined the amount of frozen carbon in Earth's northern regions is more than double previous estimates.

ANN ARBOR, Mich., July 9 (UPI) -- U.S. scientists say they've created a microscale tool to aid research involving biofilms -- bacterial colonies involved in most human infectious diseases.

BOSTON, July 9 (UPI) -- Northeastern University scientists in Boston say they have developed an early-stage, highly accurate cancer-screening technology.

WASHINGTON, July 9 (UPI) -- A U.S. study indicates more than 40 percent of animals living in mangrove ecosystems around the world are threatened with extinction.

COPENHAGEN, Denmark, July 9 (UPI) -- Findings of a Danish study suggest the use of proton pump inhibitors can produce acid-related symptoms in healthy adults.

TEL AVIV, Israel, July 9 (UPI) -- Israeli scientists say they have developed a superior method of coating orthopedic and dental implants.