Earth

From cars and bicycles to airplanes and space shuttles, manufacturers around the world are trying to make these vehicles lighter, which helps lower fuel use and lessen the environmental footprint.

EDMONTON (Jan. 9, 2018)--It's simple math, says scientist Clayton Lamb. The closer grizzly bears are to humans, the more ways there are for the bears to die. Put more simply, more roads equal fewer grizzly bears.

In a recent study examining a long-term DNA dataset of grizzly bear activity in British Columbia, Lamb and his colleagues conclusively determined what scientists have long suspected: higher road density leads to lower grizzly bear density, a critical problem for a species still rebounding from a long period of human persecution.

Location. Location. Location.

When buying and selling real estate, the phrase is a realtor's mantra.

It is also the central theme of a recently released journal report on factors that can predict heart failure risk.

According to new research in the American Heart Association journal, Circulation: Cardiovascular Quality and Outcomes, almost 5 percent of heart failure risk was connected to neighborhood factors.

Since the 1960s, tens of thousands of birds living on the Great Lakes have died during periodic outbreaks of botulism. The outbreaks have only become more common and widespread in recent years, leaving scientists who track the birds puzzled.

There are more than 8 million species of living things on Earth, but none of them -- from 100-foot blue whales to microscopic bacteria -- has an advantage over the others in the universal struggle for existence.

In murder investigations, DNA evidence often helps to link a perpetrator to a crime scene and put him or her behind bars. Now, researchers reporting in Current Biology on January 8 show that DNA evidence is also successfully being used to link rhinoceros horns seized from poachers and traffickers in various countries directly to the specific crime scenes where rhinoceros carcasses were left behind.

In August 2017, the Bolivian government passed a contentious law that paved the way for construction of a new 190-mile road cutting through one of the country's most iconic and biodiverse protected rainforests. But a report in Current Biology on January 8 shows that the Isiboro-Sécure National Park and Indigenous Territory (or TIPNIS, as the area is commonly known) has been subject to alarming levels of deforestation within its borders for many years, a reality that is too often overlooked.

In the past 50 years, the amount of water in the open ocean with zero oxygen has gone up more than fourfold. In coastal water bodies, including estuaries and seas, low-oxygen sites have increased more than 10-fold since 1950. Scientists expect oxygen to continue dropping even outside these zones as Earth warms. To halt the decline, the world needs to rein in both climate change and nutrient pollution, an international team of scientists asserted in a new paper published Jan. 4 in Science.

NASA-NOAA's Suomi NPP satellite passed over Tropical Cyclone Ava as it made landfall along the coast of northeastern Madagascar.

On Jan. 5 at 5:24 a.m. EST (1024 UTC) the Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard NASA-NOAA's Suomi NPP satellite showed the eye of Ava over the northeastern coast near Mahavelona. Mahavelona is a town located in the district of Toamasina II, in the region of Atsinanana. The eye is about 10 nautical miles wide on satellite imagery.

RIVERSIDE, Calif. - Tobacco shops, also known as smoke shops, may represent potential "nuisance properties" in urban communities of color, a study led by a researcher at the University of California, Riverside has found. Nuisance properties are properties where unsafe activities affecting public health and safety occur repeatedly.