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.

These incredible, award-winning images were all taken with microscopes. The first place image captured a single-celled protozoa devouring its prey.

Teach a computer to read the tones with the slam of a hammer.

Dr. Pedro Ferreira describes an atom, and suggests they are more like force fields and waves, rather than mass.

There is a road in Scotland where bicyclists have to pedal hard to ride downhill... but then coast uphill. Why?

Jupiter plays home to violent storms; one storm has been raging for centuries.

Having experienced a launch into space, Astronaut Leland Melvin describes what it feels like to go from launchpad to zero-g's.

Think you love dogs as much as this nerd? Meet Andrew a dog nerd who has the lucky position of being the Referee for Animal Planet's Puppy Bowl!

Even though Stephen Hawking is almost completely paralyzed, he puts in full weeks of teaching and lectures.

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!

Prof. Hawking is exploring the details of the Big Bang.

Powerful ice storms and an upside-down ring system are just a few things that puzzle scientists today.

St. Maarten is a peaceful Caribbean island... or is it? Every few minutes, airplanes pass right over the beach, causing extreme wind and leading to the bizarre hobby of jet surfing.

What does it take for Wing in Ground technology to become more than a glorified water taxi? The future has arrived and it's found in fusion technology.

Scientists discuss the probability and implications of an alien invasion.

Three new virtual reality headsets hit the market in 2016. Is this the year of VR content?

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