Scientists have found that exposure in infancy to nitrogen
dioxide (NO2), a component of motor vehicle air pollution, is
strongly linked with later development of childhood asthma among
African Americans and Latinos.
Researchers conclude in a new report that a global push for
small hydropower projects, supported by various nations and also
the Kyoto Protocol to reduce greenhouse gas emissions, may cause
unanticipated and potentially significant losses of habitat and
Ocean acidification due to rising carbon dioxide levels will
reduce the density of coral skeletons, making coral reefs more
vulnerable to disruption and erosion, according to a new study of
corals growing where submarine springs naturally lower the pH of
seawater. The study is the first to show that corals are not able
to fully acclimate to low pH conditions in nature.
The pesticides, many of which are currently used in Europe
and Australia, are responsible for reducing the regional diversity
of invertebrates in streams and rivers by up to 42 percent,
NASA's 2013 Hurricane and Severe Storms Sentinel or HS3
mission will investigate whether Saharan dust and its associated
warm and dry air, known as the Saharan Air Layer or SAL, favors or
suppresses the development of tropical cyclones in the Atlantic
Ocean. The effects of Saharan dust on tropical cyclones is a
controversial area of science. During the 2012 campaign, NASA's
Global Hawk unmanned aircraft gathered valuable data on the dust
layer that swirled around Tropical Storm Nadine for several days.
Amphibian populations are declining worldwide and a major
cause is a deadly fungus thought to be spread by bullfrogs, but a
two-year study shows they can also die from this pathogen, contrary
to suggestions that bullfrogs are a tolerant carrier host that just
spreads the disease.
The value of a fuel's long-term usefulness and viability is
judged through its energy return on investment; the comparison
between the eventual fuel and the energy invested to create it. The
energy return on investment study finds that shale gas has a return
value which is close to coal.
Planes, trains, or automobiles: what's the most
climate-friendly way to travel? A new study by researchers from
IIASA and CICERO brings better estimates of how much personal
travel impacts the climate.