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Scientists Combine House Plant With Rabbit Gene to Form 'Green Liver' Against Indoor Air Pollution
Scientists at the University of Washington (UW) may have found an unexpected way to tackle persistent indoor air pollution: a common houseplant modified with rabbit DNA.
Researchers wanted to find a way to remove the toxic compounds chloroform and benzene from the home, a UW press release explained. Chloroform enters the air through chlorinated water and benzene comes from gasoline and enters the home through showers, the boiling of hot water and fumes from cars or other vehicles stored in garages attached to the home. Both have been linked to cancer, but not much has been done to try and remove them. Until now.
"People haven't really been talking about these hazardous organic compounds in homes, and I think that's because we couldn't do anything about them," senior study author and UW civil and environmental engineering department research professor Stuart Strand said in the release. "Now we've engineered houseplants to remove these pollutants for us."
To achieve this, the scientists set out to create something Strand calls a "green liver." That's because they used a protein called 2E1 that exists in the human liver to help us process alcohol. It turns benzene into phenol and chloroform into carbon dioxide and chloride ions. This protein is also present in all mammals, including rabbits. Researchers made a synthetic version of the rabbit gene that produces this protein and introduced it to the common houseplant pothos ivy. According to lead author Long Zhang, pothos ivy was chosen because "it's a robust houseplant that grows well under all sort of conditions." It is also a tropical plant unlikely to flower in the temperate Pacific Northwest and spread the modified genes via pollination.
The results, published in Environmental Science and Technology Wednesday, showed that the gambit paid off. The researchers put both regular and modified plants in test tubes with the offending gases. The gas levels in the tubes with the unaltered plants didn't change at all. But the concentration of benzene in the tube with the rabbit-enhanced plant decreased by 75 percent in eight days. Chlorine levels fell even faster: by 82 percent after three days and to almost undetectable levels by day six.
Strand hopes that the plants could be incorporated into a "bio-filter" that would purify air pushed into it by a fan.
"If you just have one of these plants sitting over in the corner, it is not going to have enough contact with the home air to do any good," Strand told The Guardian."There aren't any devices presently on the market for dealing with these [volatile chemicals] so what we are proposing here is a technology that can fill that gap."
The researchers also want to see if they can use the same concept with other genes and other chemicals, like formaldehyde, which can be released into the home via furniture or cooking.
Center for Ecology and Hydrology professor Lawrence Jones, who was not involved in the research, told The Guardian that the idea would need to be developed further to see if it would actually work outside of the lab and in the home, where there is much more air to clean.
But University of York plant biotechnologist Dr. Liz Rylott, who was also not involved with the project, was more enthusiastic.
"This is a great breakthrough technology—on paper the health benefits are clear … these plants are lowering your exposure to toxins and that can only be a good thing," she told The Guardian. "It is difficult to say how this will affect your life [on] a long-term basis, but who doesn't want to lower their exposure to toxins?"
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Wolves and Jaguars Are Already Threatened by Border Razor Wire As Trump Vetoes Bid to Block Emergency Wall Funding
President Donald Trump issued the first veto of his presidency Friday, overturning Congress' vote to block his national emergency declaration to fund a border wall that environmental advocates say would put 93 endangered species at risk. However, the president's decision came the same day as an in-depth report from UPI revealing how razor wire placed at the border in the last four months already threatens wildlife.
Yet another whale has died after ingesting plastic bags. A young male Cuvier's beaked whale was found washed up in Mabini, Compostela Valley in the Philippines Friday, CNN reported. When scientists from the D' Bone Collector Museum in Davao investigated the dead whale, they found it had died of "dehydration and starvation" after swallowing plastic bags―40 kilograms (approximately 88 pounds) worth of them!
By Joe Sandler Clarke
"Don't expect us to continue buying European products," Malaysia's former plantations minister Mah Siew Keong told reporters in January last year. His comments came just after he had accused the EU of "practising a form of crop apartheid."
A few months later Luhut Pandjaitan, an Indonesian government minister close to President Joko 'Jokowi' Widodo, warned his country would retaliate if it was "cornered" by the EU.
By Luis Torres
For some people who live along the U.S.-Mexico border, President Trump's attempt to declare a national emergency and extend the border wall is worse than a wasteful, unconstitutional stunt. It's an attack on their way of life that threatens to desecrate their loved ones' graves.
At least 150 people have died in a cyclone that devastated parts of Mozambique, Zimbabwe and Malawi over the weekend, The Associated Press reported Sunday. Cyclone Idai has affected more than 1.5 million people since it hit Mozambique's port city of Beira late Thursday, then traveled west to Zimbabwe and Malawi. Hundreds are still missing and tens of thousands are without access to roads or telephones.
"I think this is the biggest natural disaster Mozambique has ever faced. Everything is destroyed. Our priority now is to save human lives," Mozambique's Environment Minister Celso Correia said, as AFP reported.