LAS VEGAS: Rock band U2 performs at the new Sphere in Las Vegas on Saturday, September 30. The band was the first to perform at the $2.3 billion venue, which is being billed as the world's largest spherical structure (Amiee Stubbs/imageSPACE/ZUMA Press)

AGRIA: A car is submerged in the Greek village of Agria on Saturday, September 30. Storm Elias dumped several months-worth of rain in less than a day as it swept across Greece (Louisa Gouliamaki/Reuters)

SIKKIM: Members of the Indian Army try to recover trucks that were buried at a flood-affected area in the state of Sikkim. Heavy rain caused a glacial lake to burst, leading to flash floods that killed at least 14 people and washed away roads and bridges, according to the state government. This undated photo was released by the Indian Army on Thursday, October 5 (India Army/Reuters)

LAKE TEFE’: A dead dolphin is seen in Brazil's Lake Tefé on Sunday, October. More than 100 dolphins have been found dead in the Brazilian Amazon amid a historic drought and record-high water temperatures that have exceeded 102 degrees Fahrenheit (Bruno Kelly/Reuters)

BARCELONA: "El Corazón Secreto" ("The Secret Heart"), an installation by Spanish artist Jaume Plensa, is seen at the Hospital Clinic in Barcelona, Spain, ahead of World Heart Day on Saturday, September 30 (Josep Lago/AFP/Getty Images)

NEWCASTLE: A young Newcastle United fan shows support for midfielder Bruno Guimarães before a Champions League match in Newcastle upon Tyne, England, on Wednesday, October 4 (Carl Recine/Reuters)

RIO GRANDE: A girl sleeps in her mother's arms after they walked through the Rio Grande to seek asylum in the United States on Saturday, September 30. The US Border Patrol apprehended more than 200,000 migrants crossing the US-Mexico border unlawfully in September, according to a Homeland Security official. It's the highest total this year (Daniel Becerril/Reuters)

HROZA: Dead bodies lie on the ground after a Russian missile strike killed at least 51 people in the Ukrainian village of Hroza on Thursday, October 5. It is one of the deadliest attacks against civilians since Russia invaded Ukraine last year (Diego Fedele/Getty Images)

GOMA: Congolese Army Col. Mike Mikombe sits with his lawyer Serge Lukanga after being sentenced to death in Goma, Democratic Republic of Congo, on Monday, October 2. Mikombe was convicted of murder and other crimes related to the killing of dozens of civilians during an anti-UN demonstration in August (Arlette Bashizi/Reuters)

LANGLEY: Officers with the Royal Canadian Mounted Police attend a funeral for Const. Rick O'Brien in Langley, British Columbia, on Wednesday, October 4. O'Brien was killed last month while executing a search warrant at a home in Coquitlam (Darryl Dyck/The Canadian Press/AP)