Science

FILE - In this a July 11, 2002, file photo, Dr. Kathleen Ramsay gets the attention of "Manchado," a Mexican Spotted Owl at the Wildlife Center near Espanola, N.M. A federal judge has halted tree-cutting activities on all five national forests in New Mexico and one in Arizona until federal agencies can get a better handle on how to monitor the population of the threatened owl. The order issued earlier Sept. 2019, out of the U.S. District Court in Tucson covers 18,750 square miles. (AP Photo/Neil Jacobs, File)

In this photo taken Sept. 20, 2019, David Alport, owner of the Bridge City Collective marijuana dispensary in Portland, Ore., goes over sales numbers with the store's general manager Cameron Moore. The company has seen a 31% decrease in its sales of vaping products in the past two weeks. “It’s having an impact on how consumers are behaving,” said Alport. “People are concerned, and we’re concerned.” (AP Photo/Gillian Flaccus)

Sprinklers spray water on plants at Green Valley Farms, a commercial nursery in Montevallo, Ala., on Thursday, Sept. 26, 2019. Weeks of dry, hot weather across the Deep South have worsened a drought that a federal assessment says is affecting more than 11 million people across five states. (AP Photo/Jay Reeves)

California citrus growers, packers and researchers gather for the opening of a new secure lab dedicated to the search for a cure for a deadly citrus-killing disease in Riverside, Calif., Thursday, Sept. 26, 2019. Growers hope the lab will speed up the search for a cure to the disease, which is spread by a tiny insect and has ravaged groves in Florida and abroad. The lab will be run through a partnership with University of California, Riverside. (AP Photo/Amy Taxin)

People stand on the streets after evacuating their homes, following an earthquake in Istanbul, Thursday, Sept. 26, 2019. Turkey's emergency authority says a 5.8 magnitude earthquake has shaken Istanbul with no immediate damage reported. (DHA via AP)

FILE - In this May 13, 2019 file photo provided by the National Park Service is a female condor in Zion National Park, Utah. Seventeen states sued the Trump administration Wednesday, Sept. 25, 2019, to block rules weakening the Endangered Species Act, saying the changes would make it tougher to protect wildlife even in the midst of a global extinction crisis.(National Park Service via AP, File)

FILE - This early Friday, Aug. 16, 2019 file photo shows an aerial view of large Icebergs floating as the sun rises near Kulusuk, Greenland. Greenland has been melting faster in the last decade, and this summer, it has seen two of the biggest melts on record since 2012. A special United Nations-affiliated oceans and ice report released on Wednesday, Sept. 24, 2019 projects three feet of rising seas by the end of the century, much fewer fish, weakening ocean currents, even less snow and ice, and nastier hurricanes, caused by climate change. (AP Photo/Felipe Dana)

This photo provided by NASA astronaut Christina Koch shows the launch of a Russian Soyuz rocket, as seen from the International Space Station on Wednesday, Sept. 25, 2019. (Christina Koch/NASA via AP)