5 things you need to know this weekend
World leaders reconvene as G-20 summit concludes amid violent protests
The G-20 summit in Hamburg, Germany wraps up Saturday as world leaders discuss pertinent issues such as climate change, international trade and global terrorism. President Trump, who confirmed a future visit to London after speaking with U.K. Prime Minister Theresa May, is expected to bring up North Korea relations following its first test of a long-range missile when he meets Chinese President Xi Jinping. The summit has been marred by violent protests though, as anti-globalization activists and police have clashed for two straight nights, leaving at least 11 demonstrators with severe injuries.
Syria cease-fire agreement between U.S., Russia goes into effect
A cease-fire agreement intended to permanently de-escalate the tension in southern Syria goes into effect Sunday. The U.S. and Russia struck the agreement after Trump's G-20 meeting with Russian President Vladimir Putin. The deal, which experts say has been in the works for a while, marks a new level of involvement for the U.S. in trying to resolve Syria’s civil war and pits forces loyal to Syrian President Bashar Assad and Iranian allies against rebel forces seeking to impose a brutal Islamic rule. Secretary of State Rex Tillerson said the agreement — if it holds — might be a blueprint for other parts of the country.

Amanda Nunes looks to defend her title at UFC 213
Amanda Nunes headlines UFC 213 against Valentina Shevchenko on Saturday, a year after winning the title against Miesha Tate and six months after crushing Ronda Rousey with a spectacular 48-second stoppage triumph. Nunes was little-known before her win over Tate but that upset in the main event of the company’s signature UFC 200 card propelled her into the spotlight as the first openly gay UFC champion in history. UFC 213's main event begins at 10 p.m. ET, live from Las Vegas.
Does a grainy photo prove Amelia Earhart was captured by the Japanese?
On Sunday night, a History Channel special dubbed Amelia Earhart: The Lost Evidence, aims to prove that the famed female pilot did not perish in a plane crash, but survived a crash-landing and was taken captive. The show centers around a photograph discovered in the U.S. National Archives, that appears to show Earhart and her copilot in Japan after they were thought to have perished. The theory is far from the only speculation about what happened to Earhart, but the show aims to prove that it may be the most plausible explanation of them all. The special airs at 9 p.m. ET.

It's going to hit 120 degrees in the Southwest ... again
Searing, record-breaking and potentially dangerous heat is forecast for much of California and the Southwest over the weekend, as temperatures soar well above 100 degrees in many spots. In Los Angeles, a temperature record that's stood since 1886 (95 degrees) could be broken on Saturday. Excessive heat advisories and warnings have been posted for much of western Arizona, southern Nevada and southern California, with some locations nearing 120 degrees. Temperatures this high can lead to a high risk of heat-related illnesses for the homeless, the elderly and infants, along with outdoor workers, the National Weather Service warned.