The Chicago Tribune spent approximately a year investigating the radiofrequency radiation emitted by cellphones. They stuck an iPhone 7, among other phones, into liquid that mimics human tissue, and found that the radiation measurement inside the tissue was well above the legal limit and twice what was reported to regulators. Apple disputes the results, saying it tests its products differently.
Time and tides have been unkind to the Titanic. Explorers on the first manned voyage in nearly 15 years were astonished to find its rapid decay. Charlie D'Agata explains.
It's expected to be an above-average hurricane season, which is bad news for Native Americans on a small island off the Louisiana coast. Rising waters are swallowing up their land, making them some of the country's first climate refugees. Mireya Villarreal reports.
Ice lost in Greenland means higher sea levels around the world. "Oceans Melting Greenland," a NASA program in its fourth year, is studying the melt. Seth Doane reports.
Climate activist Greta Thunberg is a Swedish powerhouse with a seemingly endless supply of energy. OPEC calls her the greatest threat to the oil industry. Roxana Saberi reports for our "Eye on Earth" series.
President Trump was in Pennsylvania on Tuesday to showcase his administration's energy policy. At a natural gas facility near Pittsburgh, the president touted fossil fuels and U.S. energy production. He also made his case for reelection at the official White House event.
Greta Thunberg has been nominated for a Nobel Peace Prize and she is just 16 years old. She's sailing from Europe to New York to call on world leaders to protect the planet. Roxana Saberi met her in her hometown of Stockholm, Sweden.