Max, Chris, and Joey decide to test out some new custom-made blades and explain the best way to dispatch a zombie. The undead better think twice before going up against these guys!

Now that astronaut Scott Kelly is back on earth, scientists are studying how all that time altered his body.

After months of pestering, Karl finally goes to see a doctor for a prostate exam. As an added bonus, Ricky and Steve get to watch the whole thing on a video monitor.

In a spectacular discovery, a team of scientists came across a 600-mile long coral reef located at the mouth of the Amazon River, all hidden under muddy waters.

See how an asteroid collision could result in the Earth spinning closer to the sun.

Explore the possibility of communication with aliens through satellite signals.

One way the world might end: evil nano-robots.

Could all-powerful robots bring about the end of the world?

Scientists discuss the probability and implications of an alien invasion.

Could super intelligent mutants spell doom for all mankind?

Scientists demonstrate a lab-sized version of a volcanic eruption - the kind that in real life, could spell doomsday for Earth.

Another way the world could end: a freezing, barren, blustery, frigid ice age.

Will the world end in nuclear holocaust brought on by mad scientists, crazed enemies, or computer-controlled warfare?

Will the end of the world be heralded by an unstoppable deadly plague?

NASA's Juno spacecraft will orbit Jupiter for about two years before scientists destroy it. They're destroying it in order to avoid contamination on Jupiter's moon Europa, which could have life.

Jupiter is the largest planet in our solar system, and it also spins the fastest.

Cocaine might give users a buzz, but it could also be making brain cells eat themselves, according to new research.

Start-up electric car venture Faraday Future previewed a technology-heavy concept race car it hopes to develop into a range of connected vehicles that can challenge luxury rivals like Tesla and Audi in the growing global market for non-gasoline cars.

In a far-off galaxy, 12.4 billion light-years from Earth, a ravenous black hole is devouring galactic grub. Its feeding frenzy produces so much energy, it’s stirring up gas across its entire galaxy.

From now until February, five planets will be visible in the early morning sky. This is the first time in a decade that you will be able to see Mercury, Venus, Mars, Jupiter, and Saturn aligned all at once.

Researchers at the Salk Institute in La Jolla, California studying neural connectors are saying that our brains have a much higher memory capacity than originally thought.

Scientists discovered a bacteria that appears to produce a novel form of antibiotic in beards. A microbiologist from University College London grew over 100 different bacteria from beards, including a microbe that was killing off other bacteria

The mosquito-borne flavivirus, Zika, is being linked to microcephaly in newborns in South and Central America. Microcephaly causes smaller than average head sizes which impacts brain development.

Guion Stewart Bluford first flew into orbit as a crew member on the 8th Space Shuttle. His mission included experiments focused largely on the affects of space travel on the human body.

For the first time, scientists have pinned down a molecular process in the brain that helps trigger schizophrenia. This new genetic pathway probably reveals what goes wrong neurologically in a young person diagnosed with the disorder.

A new study suggests a canyon system twice the length of the Grand Canyon could be buried beneath an ice sheet in Antarctica.

A stunning NASA animation has captured magnetic field activity on the sun from 2011 to 2013, displaying it through multi-coloured moving lines. Magnetic field lines are essentially invisible, and interact with each other when the sun rotates.

Einstein was right, gravitational waves do exist! Find out how scientists made the historic discovery!

Japanese start-up ‘Hoshinchu’ creates floating bonsai trees through use of repelling magnets to make the miniature plants levitate.

Galileo Galilei was an astronomer, physicist, mathematician, inventor, and philosopher who discovered four of Jupiter's largest moons and that the universe does not revolve around Earth.

A team of astronomers has detected signs of a black hole with a mass of 100,000 times that of our Sun around the center of the Milky Way. This would be the second largest black hole in the galaxy.

Even though Pluto was discovered 86 years ago, we knew very little about the dwarf planet until NASA's New Horizons mission.