The American Cancer Society now recommends that women have mammograms later and less frequently. The new guidelines recommend that women "with an average risk of breast cancer start having mammograms at 45 and continue once a year until 54," and then get one every other year after that. The guidelines also say women no longer need to have their breasts examined for lumps by doctors or nurses if there are no symptoms of abnormalities. The organization previously recommended mammograms starting at age 40 and clinical breast exams every year. — The New York Times
Justin Trudeau, Canada's new prime minister, is following in his father's footsteps. His father, Pierre Trudeau, was the 15th Canadian prime minister, serving from 1968 to 1979, and is considered by some to be one of the 20th century’s great characters. The 43-year-old was slated as too young and too inexperienced to be prime minister, but he put the Liberals back on top with his recent win. The father of three is pro-choice, a proud feminist, and an environmentalist, and he has said he wants to legalize marijuana "right away," prompting medical marijuana stocks to jump. — The Guardian
Scientists may have found the earliest evidence of life on Earth. Discovered in the Jack Hills of Australia, the new evidence is hidden in "microscopic flecks of graphite—a carbon mineral—trapped inside a single large crystal of zircon." The 4.1-billion-year-old crystals are a "physical sample of Earth’s events from that period," and scientists believe they could help answer one of life's biggest questions: "When did life on Earth begin?" — Science
Hillary Clinton has called for a U.S. government investigation into a recent 5,000% drug hike. Clinton wrote to the Food and Drug Administration and Federal Trade Commission asking them to probe Turing Pharmaceuticals' recent pricing change for Daraprim. "Patients who rely on this treatment should not have their health and lives put at risk because of an unnecessary anticompetitive market, and the FDA should act through all of its available authorities to remedy this situation as soon as feasible," she wrote. — Reuters
Oprah Winfrey has taken a 10% stake in Weight Watchers International. Winfrey will become a member of the board and will star in advertisements as part of the deal. Winfrey bought 6.4 million shares for $43.2 million and collected an additional 3.5 million in stock options. This means that by the end of the Monday, she had already made a total profit of $71.1 million. — Inc.