Emergency workers survey the scene outside a Waffle House restaurant Sunday in Nashville, Tennessee. At least four people died after a gunman opened fire at the restaurant early Sunday.
(AP photo/Mark Humphrey)
James Shaw speaks after a news conference Sunday in Nashville, Tennessee. Shaw wrestled the gun from a man who opened fire in a Waffle House restaurant earlier in the day, killing at least four people.
(AP photo/Sheila Burke)
New research published Thursday suggests dire consequences if more large mammals, like these elephants, were to go extinct due to the current rate that humans are expanding across the globe.
(Sam Cook/Duluth News Tribune/TNS)
FILE - This photo provided by the Wake County Sheriff's office shows Katie Pladl, who was fatally shot in Connecticut along with her adoptive father. Police said Steven Pladl killed his biological daughter, Katie, and her adoptive father in Connecticut, then fatally shot himself in New York state. Steven and Katie Pladl's 7-month-old son was found dead in North Carolina. (Wake County Sheriff's Office/Hartford Courant via AP)
FILE - This photo provided by the Wake County Sheriff's Office shows Steven Pladl. Police said Pladl killed his biological daughter, Katie, and her adoptive father in Connecticut, then fatally shot himself in New York state. Steven and Katie Pladl's 7-month-old son was found dead in North Carolina. (Wake County Sheriff's Office/Hartford Courant via AP)
Actor Verne Troyer poses at the 2008 premiere of the feature film "The Love Guru" in Los Angeles. Troyer from the “Austin Powers” movie franchise has died. A statement provided by Troyer’s representatives that was also posted to his Instagram and Facebook accounts says the 49-year-old actor died Saturday, April 21, 2018. (AP Photo/Dan Steinberg, file)
by Jamie Cotten North Atlantic right whales are on the brink of extinction with only around 450 remaining in the world, and entanglements in fishing gear are a major factor. MUST CREDIT: Photo for The Washington Post
by Jamie Cotten Biologist Lauren Goodwin waits for the go ahead to drop a vertical tow that collects plankton - a food source for critically-endangered North Atlantic right whales - in Cape Cod Bay off Provincetown, Mass. MUST CREDIT: Photo for The Washington Post
Elisabeth Moss plays Offred, left, and Alexis Bledel plays Ofglen in the Hulu series “The Handmaid’s Tale,” based on the novel by Margaret Atwood. The series’ second season is even darker than the first.
Students of the Walter Payton College Prep High School walkout of school and toward Millennium Park in Chicago, April 20, 2018. Students across the U.S. planned to walk out of classes all day Friday as part of the National School Walkout, a protest against what participants see as political inaction in the face of mass shootings and gun violence. (Whitten Sabbatini/The New York Times)
Tourists at the Grand Prismatic Spring at the Midway Geyser Basin in Yellowstone National Park in Wyoming, Aug. 30, 2017. A study has revealed the inner workings of the supervolcano undernear Yellowstone. (Janie Osborne/The New York Times file)
In this Nov. 22, 2015, file photo, Prince presents the award for favorite album - soul/R&B at the American Music Awards in Los Angeles. A Minnesota doctor accused of illegally prescribing an opioid painkiller for Prince a week before the musician died from a fentanyl overdose has agreed to pay $30,000 to settle a federal civil violation, according to documents made public Thursday, April 19, 2018. Prince was 57 when he was found alone and unresponsive in an elevator at his Paisley Park estate on April 21, 2016. An autopsy found he died of an accidental overdose of fentanyl. (Photo by Matt Sayles/Invision/AP, File)
Sen. Tammy Duckworth, D-Ill., left, carries her baby Maile Pearl Bowlsbey as she heads to the Senate floor to vote, and is greeted by Sen. Claire McCaskill, D-Mo., at right, on Capitol Hill, Thursday, April 19, 2018 in Washington. (AP Photo/Alex Brandon)
Cuba’s new president, Miguel Diaz-Canel delivers, his speech from the podium as outgoing president Raul Castro, on screen, watches at the National Assembly in Havana, Cuba, on Thursday.
(Adalberto Roque/Pool via AP)
In this June 5, 2013, file photo, Daphne Sheldrick, left, founder of the David Sheldrick Wildlife Trust elephant orphanage, speaks to U.S. Ambassador to Kenya Robert Godec, right, at an event to mark World Environment Day in Nairobi, Kenya. The Kenya-based wildlife organization said Friday, April 13, 2018, that the prominent conservationist Daphne Sheldrick died the night before at age 83 after a long battle with breast cancer. (AP Photo/Ben Curtis, File)
A photo provided by the David Sheldrick Wildlife Trust of Daphne Sheldrick with her daughter Angela and Eleanor the elephant, who she raised, in Tsavo East National Park in Kenya in 1968. Sheldrick, a wildlife conservationist who saved hundreds of orphaned elephants in Africa, and had work chronicled in documentaries like “Born to Be Wild,” died on April 12, 2018, at the age of 83. (The David Sheldrick Wildlife Trust via The New York Times)
National Cancer Institute Director Dr. Norman Sharpless. (National Institutes of Health handout photo)
In this Feb. 4, 2007, file photo, Prince performs during halftime of the Super Bowl XLI football game in Miami. Minnesota prosecutors are planning an announcement Thursday, April 19, 2018, in their two-year investigation into Prince's death. Prince was found alone and unresponsive in an elevator at his Paisley Park estate on April 21, 2016. An autopsy found he died of an accidental overdose of fentanyl, a synthetic opioid 50 times more powerful than heroin. (AP Photo/Chris O'Meara, File)
This undated microscope image provided by the American Society for Reproductive Medicine in January 2018 shows a trophectoderm biopsy, in which cells from the outer layer of an embryo that develop into the placenta and amniotic membranes are removed and can be used for genetic testing. When a couple is known to be at risk for having a child with a specific genetic disorder, the woman undergoes a procedure to remove some of her eggs. After fertilization, some cells can be plucked from the embryos and examined to identify those without carry the disease-causing abnormality. (ASRM via AP)
FILE - In this March 27, 2013, file photo, Bruno Sammartino sits in front of pictures, panitings and trophies highlighting his storied career as a wrestler and weightlifter, at his home in his North Hills, Pennsylvania, home. Bruno Sammartino, professional wrestling's "Living Legend" and one of its longest-reigning champions, has died. Sammartino was 82.
Family friend and former wrestling announcer Christoper Crusie saids Sammartino died Wednesday morning, April 18, 2018, and had been hospitalized for two months. (Andrew Russell/Pittsburgh Tribune-Review via AP, File)
In this Sept. 22, 1983, file photo, Bruno Sammartino is flanked by hockey Hall of Famer Phil Esposito, left, and baseball Hall of Famer Willie Mays at the "Greatest Sports Legends" reunion at New York's "21" Club. Bruno Sammartino, professional wrestling's "Living Legend" and one of its longest-reigning champions, has died. Sammartino was 82. Family friend and former wrestling announcer Christoper Crusie saids Sammartino died Wednesday morning, April 18, 2018, and had been hospitalized for two months. (AP Photo/Marty Lederhandler, File)
Researchers are suggesting that every additional hour of average daily sitting, between three and 15 hours, accounts for a 2 percent decrease in thickness of the brain’s medial temporal lobe.
Former first lady Barbara Bush died Tuesday. She was 92. (Bloomberg photo by Andrew Harrer)
California has strict building requirements to protect schools and hospitals from a major earthquake. But not skyscrapers. A five-story building has the same strength requirements as a 50-story building, a major problem for downtown San Francisco.
(Jim Wilson/The New York Times)
Millennium Tower, center, has sunk a foot-and-a-half and is leaning 14 inches toward neighboring high rises in downtown San Francisco.
(Jim Wilson/The New York Times)
In an undated photo provided by family, Ronald Dunbar, the Motown producer and songwriter. Dunbar, who worked at Motown Records and Holland-Dozier-Holland Productions, and co-wrote Freda Payne’s hit “Band of Gold,” died on April 3, 2018. He was 78. (Handout via The New York Times)
Clown fish swim inside chambers used to measure their metabolic rate in the presence of bleached anemones. When warmer oceans bleach anemones, the clown fish that rely on them for shelter become very stressed out, scientists report.
(Suzanne C. Mills/The New York Times)
When used with the usual chemotherapy, immune-activating drugs like the brand Keytruda were shown to extend survival for people with the most common type of lung cancer.
(Michael Lund/Merck via AP, file)
This photo released April 12, 2018, by The Mendocino County Sheriff's Office shows the Eel River in Northern California. Authorities searching for a family whose SUV plunged into a rain-swollen Northern California river found the vehicle and the body of a man and a girl inside it. The Mendocino County Sheriff's Office said Monday, April 16, 2018, that searchers located the car Sunday and recovered the bodies of Sandeep Thottapilly and Saachi Thottapilly. (Lt. Shannon Barney/Mendocino County Sheriff's Office via AP, File)
Harry Anderson poses after a press conference in New York in 1988. The "Night Court" star died Monday at his home in Asheville, North Carolina. He was 65.
(AP photo/Richard Drew, file)
Michael Avenatti, at the Park Hyatt Hotel in Manhattan, is the new attorney for Stormy Daniels, who allegedly had an affair with Donald Trump and has used internet crowdfunding to help ease her legal fees.
(Jennifer S. Altman/The Washington Post)
Correspondent George Stephanopoulos, left, appears with former FBI director James Comey for his Sunday “20/20” interview on ABC. Comey’s book, “A Higher Loyalty: Truth, Lies, and Leadership,” will be released on Tuesday.
(Ralph Alswang/ABC via AP)
Robin Matthews, Australia’s only nuclear tour guide, drives tourists to Maralinga. The deserted military installation, which is the size of Manhattan, is in South Australia’s remote western desert, and is the country’s only former nuclear test site open to tourists.
(Adam Ferguson/The New York Times)
Tourists visit a former atomic-weapons test site at Maralinga, Australia, on April 3. The Australian and British governments dropped seven bombs between 1956 and 1963, which dotted the earth with huge craters.
(Adam Ferguson/The New York Times)
From left, NASA Astrophysics Division director Paul Hetz, TESS deputy director of science Sara Seager, TESS principal investigator George Ricker, and TESS project manager Jeff Volosin discuss the upcoming launch of NASA’s next planet hunter, the Transiting Exoplanet Survey Satellite (TESS), in March at NASA Headquarters in Washington, D.C.
UC Berkeley research shows squirrel behavior is not so nutty (Dreamstime/TNS)
Colleen Streefland brushes snow and ice of her vehicle during a storm Saturday, April 14, 2018, in Rochester, Minn. A storm system stretching from the Gulf Coast to the Great Lakes buffeted the central U.S. with heavy winds, rain, hail and snow, (Joe Ahlquist /The Rochester Post-Bulletin via AP)
Chinese Communist leader Mao Zedong stands in a jeep as he reviews troops moving into Peiping, China, in 1949.
(The Associated Press file photo)
Damascus skies erupt with missile fire as the U.S. launches an attack on Syria targeting different parts of the capital Syria, early Saturday, April 14, 2018. Syria's capital has been rocked by loud explosions that lit up the sky with heavy smoke as U.S. President Donald Trump announced airstrikes in retaliation for the country's alleged use of chemical weapons. (AP Photo/Hassan Ammar)