This Fabric Can Power Your Phone
Scientists in the U.S. and China have fashioned the ultimate in power dressing: a fabric that recovers energy from movement and at the same time turns sunlight into electricity.
A bracelet made from fabric woven with special energy-harvesting strands that collect electricity from the sun and motion.Georgia Institute of Technology
It may be a while before the new material reaches the high street stores and delivers significant energy savings, but it means that a smartphone in a pocket could charge itself from the fabric around it.
And it stands as yet another example of the burst of global ingenuity by materials scientists and engineers in response to the spectrum of climate change driven by rising greenhouse gas emissions.
Researchers have already tested a "bionic leaf" that can harvest sunlight energy 10 times more efficiently than chlorophyll-powered foliage.
They have crafted windows and solar panels from wood, tested a "carbon negative" car battery that replaces its cathode material from carbon dioxide in the atmosphere and confected a brew of conifer essence and gut bacteria to make high-octane rocket fuel.
They have even devised an ultra-thin membrane that could capture nine-tenths of the carbon dioxide emissions from coal-burning power stations.
But the latest report from the laboratories—published in Nature Energy journal—could end up being tested in the field, as a tent fabric, or in the office, as curtains that could power a lighting system or as clothing that could exploit the wearer's activity and place in the sun.
The scientists used commercially-available machinery to weave together solar cells fashioned from lightweight polymer fibers with a second and very different thread of fibre-based nanogenerators that exploit the tribo-electric effect: that is, threads that could recover electrical power from any form of movement—rotation, sliding or vibration.
"This hybrid power textile device presents a novel solution to charging devices in the field, from something as simple as the wind blowing on a sunny day," professor Zhong Lin Wang, specialist in nanomaterials synthesis at Georgia Tech School of Materials Science and Engineering, said.
A piece of fabric woven with special strands of material that harvest electricity from the sun and motion.Georgia Institute of Technology
The new fabric is 320 millionths of a meter thick, woven together with strands of wool. It is, Professor Wang said, "highly flexible, breathable, lightweight and adaptable to a range of uses."
The energy-harvesting textile is based on common polymer materials that, he said, are not expensive to make and are environmentally friendly. The electrodes are also delivered by a low-cost process, so large-scale manufacture should be possible.
The scientists report that a 4 centimeter by 5 centimeter fragment of the hybrid power textile is capable of stably delivering output power of 0.5 milliwatts, and has been shown to charge a commercial capacitor up to two volts in one minute in ambient sunlight while being mechanically moved.
"The textile could continuously power an electronic watch, directly charge a cell phone, or drive water-splitting reactions," the authors, from Georgia Tech and from Chongqing University and Beijing Institute of Nanoenergy and Nanosystems in China, said.
Santa Barbara Becomes First California City to Pass Resolution Against Offshore Oil and Gas Drilling
The Santa Barbara City Council approved a resolution Tuesday opposing new drilling off the California coast and fracking in existing offshore oil and gas wells. The resolution is the first in a new statewide campaign to rally local governments against proposals to expand offshore fossil fuel extraction in federal waters.
The vote—which makes Santa Barbara the first California city to oppose both fracking and new offshore drilling—follows President Trump's April 28 executive order urging federal agencies to expand oil and gas leasing in federal waters. The order could expose the Pacific Ocean to new oil leasing for the first time in more than 30 years.
Starting Wednesday, the vast majority of Americans can learn about every potentially harmful chemical in their drinking water and what scientists say are the safe levels of those contaminants. The Environmental Working Group's (EWG) new national Tap Water Database is the most complete source available on the quality of U.S. drinking water, aggregating and analyzing data from almost 50,000 public water systems in all 50 states and the District of Columbia.
The organization has earned a reputation for ambitious data-mining research projects that shake up policy debates and consumer markets. EWG's online Farm Subsidy Database, listing millions of subsidy recipients, and its Skin Deep guide to more than 70,000 personal care products, draw tens of millions of visitors every year.
By Stacy Malkan
Ever since they classified the world's most widely used herbicide as "probably carcinogenic to humans," a team of international scientists at the World Health Organization's (WHO) cancer research group have been under withering attack by the agrichemical industry and its surrogates.
In a front-page series, The Monsanto Papers, the French newspaper Le Monde described the attacks as "the pesticide giant's war on science," and reported, "to save glyphosate, the firm [Monsanto] undertook to harm the United Nations agency against cancer by all means."
The lengthy report from the Energy and Policy Institute uses reams of archival documents to demonstrate that utility industry representatives knew as far back as 1968 that burning fossil fuels could trigger "catastrophic effects" on the climate.
By Sharon Kelly
The Pennsylvania's Environmental Hearing Board ordered Sunoco Pipeline LP Tuesday to temporarily halt some types of work on a $2.5 billion pipeline project designed to carry 275,000 barrels a day of butane, propane and other liquid fossil fuels from Ohio and West Virginia, across Pennsylvania, to the Atlantic coast.
On July 19, three environmental groups presented Judge Bernard Labuskes, Jr. with documentation showing that the project had caused dozens of drilling fluid spills and other accidents between April and mid-June.
By Andy Rowell
The UK has followed France in banning the sale of new petrol and diesel cars by 2040, as part of its plan to tackle chronic air pollution in cities. The government has been coming under intense pressure to act, with an estimated 40,000 people dying prematurely a year from air pollution.
By Colleen Curry
People traveling across America today can, if they're lucky, pitch a tent in the same exact spot that early American explorers and map-makers Lewis and Clark did, amid the jagged rocks and sweeping plains of the Upper Missouri River Breaks in central Montana.
Brent Rose, a journalist and filmmaker who has been traveling around the U.S. in a van for two years, was one of the lucky ones.
Kyara, a killer whale born at SeaWorld San Antonio just three months ago, died Monday at the park, as reported in this video from Newsy. Kyara is the last orca to be born in captivity under the SeaWorld breeding program, which shut down in 2016.
In a statement, SeaWorld said the cause of death was "likely pneumonia" and that "Kyara had faced some very serious and progressive health issues over the last week."