An international team of scientists is conducting a controversial experiment in Italy. The experiment is designed to test genetically modified mosquitoes that researchers hope could provide a powerful new weapon to fight malaria, which remains one of the world’s greatest scourges.

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The two-week-old shutdown has halted one of the federal government’s most important public health activities, the inspections of chemical factories, power plants, oil refineries, water treatment plants, and thousands of other industrial sites for pollution violations.

The Environmental Protection Agency has furloughed most of its roughly 600 pollution inspectors and other workers who monitor compliance with environmental laws. Those scientists, engineers and analysts are responsible for detecting violations that endanger human health, as they did, for example during an August 2018 airborne inspection that found that oil and gas fields in Karnes County, Tex., were leaking illegal levels of chemicals into the atmosphere, in violation of the Clean Air Act.

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Researchers used a gene editing tool, CRISPR, to wipe out a population of malaria-carrying mosquitoes in the lab. Questions remain about how releasing this technology into the wild would impact the environment.

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Nearly four decades of global temperature data collected by satellites reveal the atmospheric fingerprint of climate change.

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Hawaii’s governor David Ige is expected to sign the world’s first ban on the sale of sunscreens containing the chemicals oxybenzone and octinoxate this week. The state is banning the products because of concerns they may be harming one of the state’s biggest attractions — coral reefs. While it doesn’t kick in until 2021, the move is already prompting a public health pushback.

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Lab-grown chicken, beef, and duck products are edging toward the U.S. market—despite enduring confusion about how they’ll be regulated. But language buried in a draft spending bill released by a U.S. House of Representatives appropriations panel this week suggests some lawmakers are eager to get rules in place. A one-sentence proposal in the bill would put the U.S. Department of Agriculture (USDA) in charge of regulating products made from the cells of livestock or poultry, and instructs the agency to issue rules about how it will oversee their manufacture and labeling.

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They concluded that the genetic change that produced spring-run Chinook occurred only once in the species’s history. And new data published on 29 April on bioRxiv show that in rivers where spring runs disappeared decades ago, less than 1% of the remaining fish carry a copy of the early migration version of the gene. The scarcity of that gene makes it very unlikely a spring run will reappear once lost.

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The world’s leading climate science body is expected to decide this week on whether to establish a new task force on promoting gender equity within the male-dominated group. The move comes on the heels of a study finding that although the Intergovernmental Panel on Climate Change (IPCC) has increased the proportion of women involved in writing its authoritative reports, barriers to participation remain.

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Biotech researchers here are celebrating the long-awaited passage of a bill this week that clears the way for large-scale field tests and commercial release of genetically modified (GM) crops. Uganda, with several engineered varieties waiting in the wings, is expected to join a handful of other African nations moving quickly to bring homegrown GM foods to the market.

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