AFTER decades of disappointment, we may have a new lead on fighting Alzheimer’s disease. Compelling evidence that the condition is caused by a bacterium involved in gum disease could prove a game-changer in tackling one of medicine’s biggest mysteries, and lead to effective treatments or even a vaccine.

WE ALREADY KNOW it’s chilly on the moon. A lunar night lasts 14 Earth days, and its temperatures can dip into a cold so punishing it makes the polar vortex look like a hot tub. But yesterday, China’s space agency announced that the frigidity of the lunar night is even more intense than we’d thought: The country’s Chang’e 4 spacecraft recorded an icy low of –310 degrees Fahrenheit (–190 degrees Celsius).

For decades, women have shouldered most of the burden of contraception. However, long-term use of female birth control pills could increase the risk for side-effects such as blood clots or breast cancer. Now, inspired by colorful layered cocktails, researchers have developed a medium-term, reversible male contraceptive.

(CNN)The Curiosity rover is moving on, the Hubble Space Telescope made an accidental discovery, and a mysterious object was found on the edge of the solar system -- and that's just some of what happened in space this week.

It doesn't seem possible. But they say it's true. A small team of Israeli scientists is telling the world they will have the first “complete cure” for cancer within a year, The Jerusalem Post reported on Monday. And not only that, but they claim it will be brief, cheap and effective and will have no or minimal side-effects.