Singer's Secrets: 5 Most Incredible Discoveries of the Week

A worrisome STD and a clue to when a person will first have sex make the list:

• Science Reveals Freddie Mercury's Singing Secrets: Freddie Mercury had one of the most memorable voices in music, and now researchers have unlocked some of its mystery. For one thing, his vocal chords moved faster than normal, though the bigger part of the puzzle involves something called subharmonics. The study, however, didn't find evidence to back up one long-standing belief about Mercury's voice.
• Dinosaurs Were Already in Big Trouble: Dinosaurs were already past their prime when a huge asteroid finished them off 66 million years ago, according to Universities of Reading and Bristol researchers who say their work "changes our understanding of the fate of these mighty creatures." And the findings may hold a modern-day lesson.

• Genes Help Predict When We Lose Our Virginity: Sure, people become sexually active for many reasons, but at least part of the timing appears to come down to our genes. Cambridge researchers say it's about "one-quarter nature, three-quarters nurture." The study also reviews some of those "nurture" reasons that could affect one's first sexual experience.
• Watch Out—'Super Gonorrhea' May Go Global: "Super gonorrhea" is popping up in British cities including London, and doctors are worried it may spread faster just as it becomes untreatable. The STD is exceptionally good at fighting off antibiotics, which may lead to a problem that one British official calls "an even greater threat to mankind than cancer."
• The Top 10 Things That Kill Us: Don't count on leaving this world in a bizarre hot tub incident. According to the CDC, your death is much more likely to be, well, boring. The No. 1 killer: heart disease. Accidents and suicides also crack the list.

Click to read about more discoveries, including a revelation about circumcised penises. (More discoveries stories.)