Paris Saint-Germain and Schalke sealed top spot in their Champions League groups on Tuesday, while Cristiano Ronaldo scored his tournament-leading sixth goal to help Real Madrid beat Ajax 4-1.

A 17-minute snow delay during the Dinamo Zagreb-Dynamo Kiev match offered something unexpected on a night when all places in the last 16 were decided before kickoff.

Salmon that is genetically modified to grow twice as fast as normal could soon show up on dinner plates — if the company that makes the fish can stay afloat.

After weathering concerns about the safety and environment impact of the salmon, Aquabounty in 2010 was to poised to become the world's first company to sell fish whose DNA has been altered to speed up growth. But the a government agency has not approved the fish, and Aquabounty is running out of money.

The lions that roam Africa's savannahs have lost as much as 75 percent of their habitat in the last 50 years as humans overtake their land and the lion population dwindles, said a study released Tuesday.

Researchers at Duke University, including prominent conservationist Stuart Pimm, warn that the number of lions across the continent have dropped to as few as 32,000, with populations in West Africa under incredible pressure.

For Alzheimer's patients and their families, desperate for an effective treatment for the epidemic disease, there's hope from new studies starting up and insights from recent ones that didn't quite pan out.

If the new studies succeed, a medicine that slows or even stops progression of the brain-destroying disease might be ready in three to five years, said Dr. William H. Thies, chief medical officer of the Alzheimer's Association. The group assists patients and caregivers, lobbies for more research and helps fund studies.

European Union finance ministers are trying to set up a united banking supervisor to better deal with future financial crises.

The 27 ministers hope to have a deal by the end of the year that will give the European Central Bank wide-ranging authority over banks. They remain divided over whether the ECB should oversee all banks or only the largest.

The leader of an anti-bailout party leading opinion polls in Greece has called for a delay in the repayment of rescue loans until the country emerges from its major recession, which is heading into a sixth year.

Alexis Tsipras, leader of the main opposition Radical Left Coalition Party, argued austerity policies pursued by the three-party coalition government would continue to weaken Greece's economy and leave the country more reliant on emergency loans from other eurozone states and the International Monetary Fund.

Juan Ignacio Chela said he is retiring from professional tennis, leaving with six ATP singles titles and three in doubles — all on clay.

The 33-year-old Argentine has been hinting at retirement for weeks, and he announced it Monday on his Twitter account.

Newcastle recorded its first Premier League win in six matches by beating 10-man Wigan 3-0 on Monday after two goals by Demba Ba and another from Gael Bigirimana.

Newcastle manager Alan Pardew had been under pressure with his injury-hit team winning only one league match since he signed an eight-year contract extension in late September to sit just two points above the relegation zone.

Utah officials announced plans Monday for a long-shot bid for another Winter Olympics, saying they already have the venues in place and have left behind the taint of scandal from the 2002 games.

The bid for 2026 is contingent on the U.S. Olympic Committee deciding it will endorse a city for those games. Utah announced a bid far in advance to scare off any competitors, Reno-Tahoe among them. Nevada officials said Monday they were waiting for a USOC decision before making a possible bid of their own.

Juventus has been fined €10,000 ($13,000) after its fans unveiled an offensive banner during the 3-0 derby win over Torino that referred to the 1949 plane crash that wiped out nearly the entire "Grande Torino" squad.

The huge banner read — in translation — "We of Turin pride and glory, you just a crash."