Science

FILE - In this Feb. 24, 2019, file photo, containers of Roundup are displayed on a store shelf in San Francisco. A Northern California judge has upheld a jury's verdict that Monsanto's Roundup herbicide caused cancer in a couple but reduced damages from $2 billion to $86.7 million. (AP Photo/Haven Daley, File)

This photo provided on Thursday, July 25, 2019, by the Planetary Society shows a portion of the LightSail2 spacecraft, top, and part of Earth, centered on Baja California, Mexico. It was one of the photos transmitted from The Planetary Society's LightSail 2 spacecraft, confirming the successful deployment of its solar sail. (Planetary Society via AP)

FILE - In this Sept. 27, 2014 file photo, Brad and Sue Wyman paddle their 1930's Old Town Guide canoe along the Androscoggin River as leaves display their fall colors north of the White Mountains in Dummer, N.H. The New Hampshire Supreme Court on Friday, July 19, 2019 upheld a state committee's rejection of a proposal to bring a hydropower transmission line from Canada to markets in southern New England, possibly dealing a fatal blow to a plan that has raised concerns among communities and environmentalists that it would harm the region's tourism industry and hurt property values. (AP Photo/Jim Cole, File)

People cool down in the fountains of the Trocadero gardens in Paris, Thursday July 25, 2019, when a new all-time high temperature of 42.6 degrees Celsius (108.7 F) hit the French capital. in the background is the Eiffel Tower. (AP Photo/Rafael Yaghobzadeh)

In this July 23, 2019 photo, Jim Andrews, a University of Vermont herpetology lecturer, holds a young northern leopard frog in Salisbury, Vt. A wet spring has resulted in a 100-fold increase in the population of the particular frog in a region of Vermont. (AP Photo/Lisa Rathke)

FILE - This April 12, 2018 file photo shows the eye of a woman in New York. Patients are about to be enrolled in the first study to test gene editing inside the body to try to cure an inherited form of blindness. People with the disease have healthy eyes but lack a gene that converts light into signals to the brain that enable sight. (AP Photo/Patrick Sison, File)

Actor Dwayne "The Rock" Johnson, third from right, walks with TMT opposition leader Kaho'okahi Kanuha, third from left, while being accompanied by the Royal Order of Kamehameha I during a visit to the protests against the TMT telescope, Wednesday, July 24, 2019, at the base of Mauna Kea on Hawaii Island. (Jamm Aquino/Honolulu Star-Advertiser via AP)

This photo provided by the U.S. Bureau of Land Management (BLM) shows wildfires burning in Idaho, Wednesday, July 24, 2019. The largest wildfire at the nation's primary nuclear research facility in recent history had been burning close to buildings containing nuclear fuel and other radioactive material, but a change in wind direction Wednesday was pushing the flames into open range at the sprawling site in Idaho, officials said. The lightning-caused fire at the Idaho National Laboratory is one of several across the U.S. West. (Bureau of Land Management via AP)

FILE - In this Jan. 13, 1935, file photo, American aviatrix Amelia Earhart climbs from the cockpit of her plane at Los Angeles, Calif., after a flight from Oakland to visit her mother. Robert Ballard, who discovered the Titanic, and a National Geographic expedition will search for Earhart's plane in August 2019 near a Pacific Ocean atoll named Nikumaroro, part of the Phoenix Islands. (AP Photo, File)