Breakthroughs, discoveries, and DIY tips sent every weekday. Nearly one in three U.S. households harbor a cold-hearted killer. Some even have a well-known proclivity for torture. And while the popular pets are best known for downing birds and cornering mice, they are also adept at hunting all manner of bugs. Host a cat in your home long enough and you'll likely become accustomed to regular deliveries of amputated insect legs, wings, or the occasional whole carcass.

This weekend, the fastest sprinters on the planet came together at the Tokyo Olympics to compete for the gold in the 100-meter dash. Lamont Marcell Jacobs crossed the finish line in 9.80 seconds to bring Italy its first gold in the event. In the women's race, Jamaica won the gold, silver, and bronze--a clean sweep led by Elaine Thompson-Herah, who smashed through a 33-year-old Olympic women's record with a time of 10.61 seconds. But neither of them could touch the legacy of Jamaica's eight-time Olympic gold medalist Usain Bolt, who retired in 2017 but still boasts the title of fastest human alive. Bolt ran the 100 meters in 9.58 seconds.

But some transhumanists hope to slowly morph into "immortal cyborgd" with endlessly replaceable parts. Did you recently welcome a child into the world? An upstanding responsible parent such as yourself is surely doing all you can to prepare your little one for all the pitfalls life has in store. However, thanks to technology, children born in 2014 may face a far different set of issues than you ever had to. And we're not talking about simply learning to master a new generation of digital doohickeys, we're talking about living in a world in which the very definition of "human" becomes blurred.

Elon Musk the CEO of Tesla and SpaceX, has an interesting way of looking at both the world and the universe. Just this Friday Musk shared his plan to use a SpaceX rocket to transport people to points around the world in just 30 minutes. Maybe what he says is crazy. But no matter what stance you take on Musk's ideas, it's worth hearing them out. Below are 14 of Musk's craziest views on everything from Mars to artificial intelligence.

Tesla and SpaceX CEO, Elon Musk recently emphasized the threat Artificial Intelligence (AI) poses on the human race. In an open letter to the United Nations, Musk and other robotic experts, said artificial super intelligence would lead to "lethal autonomous weapons" that would bring the "third revolution in warfare". The letter was signed by 115 robotic experts who feel the need to raise the alarm on artificially intelligent robots – which they state, are a present danger and not necessarily a threat coming in the distant future. If you're not concerned about AI safety, you should be. The letter states that this Pandora's box will be hard to close, once it is opened.

"If you're not concerned about AI safety, you should be. Vastly more risk than North Korea," Musk tweeted after his $1 billion startup, OpenAI, made a surprise appearance at a $24 million video game tournament Friday night, beating the world's best players in the video game, "Dota 2." Musk claimed OpenAI's bot was the first to beat the world's best players in competitive eSports, but quickly warned that increasingly powerful artificial intelligence like OpenAI's bot -- which learned by playing a "thousand lifetimes" of matches against itself -- would eventually need to be reined in for our own safety. "Nobody likes being regulated, but everything (cars, planes, food, drugs, etc) that's a danger to the public is regulated. AI should be too," Musk said in another tweet on Friday night. Musk has previously expressed a healthy mistrust of artificial intelligence.

Elon Musk wants to merge the computer with the human brain, build a "neural lace," create a "direct cortical interface," whatever that might look like. In recent months, the founder of Tesla, SpaceX, and OpenAI has repeatedly hinted at these ambitions, and then, earlier this week, The Wall Street Journal reported that Musk has now launched a company called Neuralink that aims to implant tiny electrodes in the brain "that may one day upload and download thoughts." Bryan Johnson, a Silicon Valley entrepreneur who previously sold a startup to PayPal for $800 million, is now building a company called Kernel, pledging to fund the operation with $100 million of his own money. He says the company aims to build a new breed of "neural tools" in hardware and software--ultimately, in a techno-utopian way, allowing the brain to do things it has never done before. "What I really care about is being able to read and write the underlying functions of the brain," says Johnson.

LOS ANGELES – Not content to reach for Mars and dethrone fossil fuels, tech entrepreneur Elon Musk on Tuesday is turning his focus to delving into people's minds. In a message fired off Tuesday on Twitter, Musk appeared to confirm he is creating a startup called Neuralink devoted to enabling brains to interface directly with computers, accessing processing power and perhaps even downloading memories for storage. Difficult to dedicate the time, but existential risk is too high not to," Musk tweeted. The Twitter post by the founder of electric carmaker Tesla and exploration firm SpaceX came a day after a Wall Street Journal report saying the company had been formed. The Journal reported that the new startup will focus on "neural lace" technology, which involves implanting tiny brain electrodes capable of uploading and downloading thoughts.

Sending tourists for a trip around the moon is the latest big idea launched by Elon Musk, a Silicon Valley star known for turning his passions into visionary enterprises. Musk has become one of the United States' best-known innovators. He was a founder of payments company PayPal, electric carmaker Tesla Motors and SpaceX, maker and launcher of rockets and spacecraft. SpaceX recently announced that two private citizens have paid money to be sent around the Moon in what would mark the farthest humans have ever traveled to deep space since the 1970s. In a sector where entrepreneurs often speak of "moonshots," Musk is one of the biggest dreamers.

Elon Musk hasn't given up on his vision to add a digital layer of intelligence to our brain. The Tesla and SpaceX CEO teased that he may have an announcement about "neural lace," a concept he first brought up at Vox Media's Code Conference in June, coming next month on Twitter Wednesday morning. Musk first described neural lace as a brain-computer system that would link human brains with a computer interface. It would allow humans to achieve "symbiosis with machines" so they could communicate directly with computers without going through a physical interface. Musk has said a neural lace will help prevent people from becoming "house cats" to artificial intelligence.