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.

DNews' Amy Shira Teitel recaps SpaceX's Falcon 9 barge landing test and whether its inability to land should be called a failure.

You never know what will inspire someone. Astronaut Reid Wiseman wanted to spark people’s imagination with new social media tools to put the excitement of seeing the earth and space right in front of them.

One of the most surprising sights from the space station is the lightning constantly bursting across the planet. Astronaut Reid Wiseman talks about the phenomenon and how it felt to see its power.

The proposed plane would use both electricty and fossil fuels for power. This could cut the cost of flying by millions.

A number of questions still remain about how Saturn's rings formed.

The new potential planet is said to have 10 times the mass of Earth and is located somewhere between Earth and Neptune.

Astronaut Reid Wiseman talks about the mission of the International Space Station - to ready us to explore Mars and the unknown. Like the rest of us he’s waiting to see Pluto and the surprises it will reveal.

There are over a million asteroids between Mars and Jupiter, some of which could be a threat to Earth. NASA has developed a new team to help defend our planet from them!

Mercury boasts both boiling hot and freezing cold temperatures.

For rookie Astronaut Reid Wiseman, his "wow" moment came when he saw the sun rise over our planet. In his words, "Nothing compares to seeing it with your own eyes."

China is just two years away from becoming the first country to land a probe on the far side of the moon.

How much do you love writing? Check out this clip as Richard shares how much of a writing nerd he truly is!

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.