Central to the field of ecology is the mantra that species do not exist in isolation: They assemble in communities — and within these communities, species interact. Predators hunt prey. Parasites exploit hosts. Pollinators find flowers.

With amphibian populations declining around the world and funds to find the causes scarce, a team of Penn State researchers has shown that an unorthodox tactic will make it easier and therefore less expensive to capture adult salamanders and frogs.

Greenhouse gas emissions caused by urban households’ purchases of goods and services from beyond city limits are much bigger than previously thought. These upstream emissions may occur anywhere in the world and are roughly equal in size to the total emissions originating from a city’s own territory, a new study shows. This is not bad news but in fact offers local policy-makers more leverage to tackle climate change, the authors argue in view of the UN climate summit COP23 that just started. They calculated the first internationally comparable greenhouse gas footprints for four cities from developed and developing countries: Berlin, New York, Mexico City, and Delhi. Contrary to common beliefs, not consumer goods like computers or sneakers that people buy are most relevant, but housing and transport – sectors that cities can substantially govern.

The recent uproar about seats on a British Airways flight crawling with bedbugs is only one of the unintended consequences that urbanization worldwide has on evolution, says a University of Toronto researcher whose new study takes a comprehensive look at those consequences.
 
 “As we build cities, we have little understanding of how they are influencing organisms that live there,” says Marc Johnson, an associate professor of biology at U of T Mississauga who is also a director of the University of Toronto’s Centre for Urban Environments.

Scientists have used satellite tracking and a crime-scene technique to discover an important feeding ground for green turtles in the Mediterranean.

Warm and salty wastewater is a by-product of many industries, including oil and gas production, seafood processing and textile dyeing. KAUST researchers are exploring ways to detoxify such wastewater while simultaneously generating electricity. They are using bacteria with remarkable properties: the ability to transfer electrons outside their cells (exoelectrogenes) and the capacity to withstand extremes of temperature and salinity (extremophiles).

Decisions that will be taken at the G7 Ministerial Meeting on Health that will be open by Minister Beatrice Lorenzin tomorrow in Milan have followed an intense dialogue with the international scientific community on the most efficient strategies to be adopted to deal with the impact of climate changes on health on a global scale in the near future.

Researchers at the University of British Columbia have developed a new early warning system to predict when and where human-caused wildfires are most likely to occur in the spring.

Using satellite images of vegetation, the researchers can forecast where wildfire risk peaks in boreal forests by tracking moisture in fuel sources like leaves.

Can environmental toxins disrupt circadian rhythms – the biological “clock” whose disturbance is linked to chronic inflammation and a host of human disorders? Research showing a link between circadian disruption and plankton that have adapted to road salt pollution puts the question squarely on the table.

On July 22, 1847, a scouting party from The Church of Jesus Christ of Latter-day Saints stood above the Great Salt Lake Valley in modern-day Utah; by 1870, more than 18,000 followers had colonized the valley and surrounding region, displacing Native American populations to establish dispersed farming communities. While historians continue to debate the drivers of this colonization event, a new study from the University of Utah proposes that agricultural productivity drove dispersal patterns in a process that led the current distribution of Utah populations today.