The source of the dengue outbreak has been traced to mosquitoes in Tokyo's Yoyogi Park, which has now been closed.
The Boston area man is the third American mission worker to have contracted the deadly virus while working with patients in West Africa.
The Ebola outbreak has killed some 1,550 people in West Africa, and experts fear the virus is still spreading fast.
Japan plans to resume hunting minke whales in the Antarctic despite a ruling from the U.N. that temporarily banned all whaling.
The Ebola crisis is only going to get worse, a spokesperson for the U.S. Centers for Disease Control and Prevention said.
Garbage patches form in the high seas due to rotating ocean currents and pose a serious threat to marine life.
Environmental critics say the U.S. Congress and National Park Service aren't doing enough to protect national wilderness areas.
September may not be as astronomically exciting as August or October, but there are a few highlights.
An invasive species of cricket, the Asian camel cricket, is displacing native crickets in the eastern United States.
A new study suggests chimps have superior memories and can follow choice patterns better than humans.
Japanese researchers at Nagasaki University claim the new test is faster and cheaper than the current method being used to detect Ebola.
Some carbs, such as whole grains and fruits, are considered healthier than those found in white bread and other processed foods.
The FDA has skipped a step and waived pre-clinical trials, clearing the way for the vaccine to be tested on humans.
Researchers studied satellite scans of a region spanning over 386,000 square miles, or more than three times the size of the state of Virginia.
Nearly 110 million acres of U.S. land have been designated as "wilderness" areas since national Wilderness Act took effect in 1964.
The new technique is not only more accurate, the scientists claim, it can also assess whether a patient is responding to treatment.
A diminutive eruption in the Holuhraun lava field north of the Bardarbunga volcano led to the action Sunday.
Research sheds light on the mysterious disappearance of Paleo-Eskimos, the ancestors of modern-day Inuit and Native Americans.
Small changes in many genes rather than drastic changes in a few genes caused the domestication, the scientists said.
The experimental drug has so far cured two American doctors, but the company producing it says it has no more doses of the drugs.
A federal judge ruled the law placed an undue burden on women by reducing the number of clinics where they could seek abortions.
Ebola research has been funded far more by the government than by drug companies.
Senegal's first case of Ebola virus disease has developed in a man from neighboring Guinea.
Continuing global investments in fossil fuel-fired power plants are undermining efforts to reduce greenhouse gases.
A coast guard aircraft will visit the region to survey the site further and gauge the ash content.
Despite sharing the same building blocks, the human genome is more than 10 times larger than those of the worm and fly.
This is the first time scientists have managed to collect data before and after a planetary-system smashup.
Scientists now believe the current Ebola outbreak began with an animal in West Africa in 2004.
NASA's SLS rocket could bring humans to Mars and asteroids within 20 years, thrilling earlier skeptics.
The World Health Organization is preparing for a potentially massive Ebola outbreak and is aiming to stop the disease by spring 2015.