Top Stories

Increased ocean acidification is due to human activities, say scientists
September 8, 2016 05:24 PM - Massachusetts Institute of Technology via ScienceDaily

Oceanographers from MIT and Woods Hole Oceanographic Institution report that the northeast Pacific Ocean has absorbed an increasing amount of anthropogenic carbon dioxide over the last decade, at a rate that mirrors the increase of carbon dioxide emissions pumped into the atmosphere.

The scientists, led by graduate student Sophie Chu, in MIT's Department of Earth, Atmospheric, and Planetary Sciences, found that most of the anthropogenic carbon (carbon arising from human activity) in the northeast Pacific has lingered in the upper layers, changing the chemistry of the ocean as a result. In the past 10 years, the region's average pH has dropped by 0.002 pH units per year, leading to more acidic waters. The increased uptake in carbon dioxide has also decreased the availability of aragonite -- an essential mineral for many marine species' shells.

Tropics told to ban coral-killing sunscreen
September 8, 2016 06:57 AM - Inga Vesper, SciDevNet

Tropical island nations should team up to ban coral-killing sunscreen products, following the example of Hawaii, a conference has heard. Chemical compounds in sunscreen lotions cause irreparable damage to reefs, which are crucial to the livelihoods of 500 million people in the tropics, scientist and policymakers said at the IUCN World Conservation Congress on 3 September. Hawaii is leading a legistlative effort to ban the use of sunscreen that contains oxybenzone or similar harmful agents at its beaches.

Future fisheries can expect $10 billion revenue loss due to climate change
September 7, 2016 11:20 AM - University of British Columbia via EurekAlert!

Global fisheries stand to lose approximately $10 billion of their annual revenue by 2050 if climate change continues unchecked, and countries that are most dependent on fisheries for food will be the hardest hit, finds new UBC research.

Climate change impacts such as rising temperatures and changes in ocean salinity, acidity and oxygen levels are expected to result in decreased catches, as previous research from UBC's Institute for the Oceans and Fisheries has found. In this study, the authors examined the financial impact of these projected losses for all fishing countries in 2050, compared to 2000.

Toxic air pollution nanoparticles discovered in the human brain
September 7, 2016 09:46 AM - Oxford University

A team involving Oxford University scientists has, for the first time, discovered tiny magnetic particles from air pollution lodged in human brains – and researchers think they could be a possible cause of Alzheimer's disease.

Researchers led by Lancaster University found abundant magnetite nanoparticles in the brain tissue of 37 individuals aged three to 92 who lived in Mexico City and Manchester. This strongly magnetic mineral is toxic and has been implicated in the production of reactive oxygen species (free radicals) in the human brain, which are associated with neurodegenerative diseases including Alzheimer's disease.

The results have been published in the journal Proceedings of the National Academy of Sciences.

New simulations of wind power generation
September 6, 2016 02:28 PM - ETH Zurich via EurekAlert!

There has been a massive boom in wind power capacity both in Europe and worldwide. In 2015 global installed capacity was around 350 gigawatt (GW), with 135 GW installed in Europe, distributed across some 87,000 wind turbines. Wind power now provides a bigger share (13 percent) of electricity than nuclear power stations. In countries such as Spain, Denmark and Germany, the amount of wind power already installed is in theory enough to cover nationwide demand for electricity under ideal conditions, i.e. maximum wind power output and low consumer demand.

Detecting forest fragility with satellites
September 6, 2016 08:48 AM - Wageningen University and Research Centre via ScienceDaily

Over the past decades’ forests in different parts of the world have suffered sudden massive tree mortality. Now an international team of scientists led by researchers from Wageningen University in the Netherlands has found a way to spot from satellite images which forests may be most likely to fall prey to such die-off events.

Climate change could make coffee extinct by 2080
September 5, 2016 09:56 AM - Laurie Balbo via Green Prophet

The sun may be setting on a popular morning brew. According to a new report issued by the Climate Institute, global warming will underpin an estimated 50 percent drop in coffee production by 2050. Bad news for coffee lovers, but catastrophic for the 120 million people in dozens of mostly developing nations who depend on the coffee trade to make ends meet.

Clues in ancient mud hold answers to climate change
September 2, 2016 02:51 PM - University of Notre Dame via ScienceDaily

New research suggests that Africa has gradually become wetter over the past 1.3 million years -- instead of drier as was thought previously.

The research from Berke, assistant professor in the Department of Civil and Environmental Engineering and Earth Sciences at the University of Notre Dame and Environmental Change Initiative affiliate, suggests that Africa has gradually become wetter over the past 1.3 million years -- instead of drier as was thought previously. The findings shine new light on the "savanna hypothesis," which held that humans in Africa as a whole migrated to grasslands due to a changing climate.

The sediment samples that Berke studied came from Lake Malawi in southeast Africa, whereas data used for the savanna hypothesis came from the north. Her research suggests that climate conditions across Africa may have been more variable than once thought.

Motivating Eco-Friendly Behaviors Depends on Cultural Values
September 2, 2016 07:13 AM - Association for Psychological Science

The specific cultural values of a country may determine whether concern about environmental issues actually leads individuals to engage in environmentally friendly behaviors, according to the new research published in Psychological Science, a journal of the Association for Psychological Science.

The findings suggest that individual concern is more strongly associated with motivation to act in countries that espouse individualistic values, while social norms may be a stronger motivator in collectivistic societies.

Subantarctic seabed creatures shed new light on past climate
September 1, 2016 04:59 PM - British Antarctic Survey via EurekAlert!

A new marine biodiversity study in one of the largest Marine Protected Areas in the world reveals the impact of environmental change on subantarctic seabed animals and answers big questions about the extent of South Georgia's ice sheet during the Last Glacial Maximum around 20,000 years ago.

Reporting this week in the Journal of Biogeography researchers at British Antarctic Survey (BAS) describe how colonies of seabed creatures, such as sea sponges - that play an important role in absorbing and storing carbon from the atmosphere - can take thousands of years to recover from major glaciation events.

First | Previous | 2 | 3 | 4 | 5 | 6 | Next | Last