The anxiety over antibiotic-resistant superbugs, which are responsible for 23,000 deaths a year in the United States, is likely to grow in California, following the recent discovery by UCLA researchers of high levels of antibiotic-resistant genes in parks in four cities.

Antibiotic-resistant genes, or ARGs, lead to antibiotic-resistant bacteria. And with antibiotic resistance rapidly increasing, worldwide they are expected to kill 10 million people annually by 2050 — more than cancer.

Large-scale interventions to water resources, such as irrigation, dams and reservoirs, and water withdrawals, have been essential to human development. But interventions tend to solve water scarcity problems at a local level, while aggravating water scarcity downstream.  In a new study published in the journal Nature Communications, researchers have now assessed the impacts of human interventions on water scarcity at a global scale.

Hundreds of built and proposed hydroelectric dams may significantly harm life in and around the Amazon by trapping the flow of rich nutrients and modifying the climate from Central America to the Gulf of Mexico. These findings, published in Nature, emerge from a multidisciplinary, international collaboration of researchers from 10 universities, led by scientists at The University of Texas at Austin.

To meet energy needs, economic developers in South America have proposed 428 hydroelectric dams, with 140 currently built or under construction, in the Amazon basin — the largest and most complex network of river channels in the world, which sustains the highest biodiversity on Earth. The rivers and surrounding forests are the source of 20 percent of the planet’s fresh water and valuable ingredients used in modern medicine. 

If electric cars could recharge while driving down a highway, it would virtually eliminate concerns about their range and lower their cost, perhaps making electricity the standard fuel for vehicles.

Now Stanford University scientists have overcome a major hurdle to such a future by wirelessly transmitting electricity to a nearby moving object. Their results are published in the June 15 edition of Nature.

“In addition to advancing the wireless charging of vehicles and personal devices like cellphones, our new technology may untether robotics in manufacturing, which also are on the move,” said Shanhui Fan, a professor of electrical engineering and senior author of the study. “We still need to significantly increase the amount of electricity being transferred to charge electric cars, but we may not need to push the distance too much more.”

Global consumption of coal fell by a record amount last year, driven by a rise in natural gas, increasing deployment of wind and solar power, and a shift in China away from heavy industry, according to BP’s global review of energy trends.

Without action, the supply of fresh water in Iqaluit will begin to dwindle by 2024 due to climate change and increased demand, research led by York University has found. 

“Extreme climates make the management of fresh water difficult, but add climate change to the mix, along with too few financial and human resources, and northern cities, such as Iqaluit could run out of fresh water,” said Andrew Medeiros of York University who led the research.

Plastic, metal, rubber and paper are some of the materials that pollute the world's oceans, often in the form of soda cans, cigarette butts, plastic bags and bottles, and fishing gear.

Environmental and marine science specialists call it "marine debris," which, simply put, means anything in the ocean that wasn't put there by nature.

Recently, though, a new type of trash — microplastics — has become a focus for marine researchers, and they fear the impact of this type of debris may be especially dire. 

If projections for melting Antarctic sea ice through 2100 are correct, the vanishing landscape will strip Emperor penguins of their breeding and feeding grounds and put populations at risk.  But like other species that migrate to escape the wrath of climate change, can these iconic animals be spared simply by moving to new locations?

According to new research led by the Woods Hole Oceanographic Institution (WHOI), they cannot. Scientists report that dispersal may help sustain global Emperor penguin populations for a limited time, but, as sea ice conditions continue to deteriorate, the 54 colonies that exist today will face devastating declines by the end of this century. They say the Emperor penguin should be listed as an endangered species. The study was published in the June 6, 2017 edition of the journal Biological Conservation.

Large-scale fisheries receive about four times more subsidies than their small-scale counterparts, with up to 60 per cent of those subsidies promoting overfishing.

A recent study by the University of British Columbia found that while small-scale fisheries employ over 22 million people globally and directly support food security, of the estimated global fisheries subsidies of $35 billion (U.S.) in 2009, only 16 per cent was allocated to the small-scale fishing sector. Equivalent numbers for Canada are $1.1 billion (U.S.) and 5.8 per cent, respectively.

Overheated cities face climate change costs at least twice as big as the rest of the world because of the ‘urban heat island’ effect, new research shows.

The study by an international team of economists of all the world’s major cities is the first to quantify the potentially devastating combined impact of global and local climate change on urban economies.