(eerie music)
- [Voiceover] Number five: Up until this point,
the human race has been very lucky.
Some phenomenon in our universe could easily destroy
the fragile balance of life on our planet.
An example of this is the gamma ray burst.
Gamma ray bursts occur when a massive star
goes supernova.
In a few cataclysmic seconds, a supernova releases
more energy than our sun will produce during
its entire life.
When a star goes supernova, this energy is channeled
through two magnetic poles.
If one of these magnetic poles was close enough to Earth
and was facing in the correct direction, our planet could be
hit with a massive gamma ray burst.
A gamma ray burst would instantly sterilize
all life on Earth, and boil away all of our oceans.
This is particularly disturbing because a gamma ray burst
travels at the speed of light, and there would be no warning
of our impending doom.
Number four: Right now, there is a mass shooter
preparing to embark on a killing spree.
We just haven't heard of them yet.
When you look at the rate of mass shootings
in Western countries, it is statistically likely
that some, at this very moment, is either contemplating
or preparing to go on a killing spree, as we speak.
For instance, the mass shooter, Elliot Rodger,
spent nearly a year preparing for his infamous
killing spree, before he took six lives.
There has also been 35 to 50 acive serial killers
operating in the United States right now.
They simply have yet to be caught,
or have not yet been traced to a single individual.
Even if you do your best to avoid high crime areas,
a serial killer could still kill you, because in many cases,
serial killers such as the Zodiac Killer strike in
peaceful, suburban neighborhoods
and choose their victims, seemingly at random.
Number three: Something known as a
Flood-basalt eruption is capable of wiping
out an entire country without any warning.
These eruptions are formed when Basalt lava slowly
is forced to the surface of a region.
If a flood-basalt eruption were to occur,
a country the size of France would be covered
by lakes of lava that would stretch beyond
the horizon in every direction, wiping out any evidence
that France ever existed in the first place.
The lava seas that form from the geological disturbances
can render areas uninhabitable for hundreds
of thousands of years.
The lava flows created by this disturbance
could also release toxic gases into our atmosphere,
potentially poisoning the rest of Earth's population.
Flood-basalt eruptions take hundreds and thousands,
or millions of years to occur.
There could be a flood-basalt eruption working its way
up through the planet right now,
and we wouldn't even know.
Number two: Sitting at a desk for extended
periods of time poses a serious risk to your health.
Regardless of whether you manage to exercise,
prolonged periods spent sitting down makes you fat,
increases your vulnerability to heart disease,
causes you to develop diabetes, gives you back and neck pain
and weakens the bones in your legs.
Sitting down also greatly lowers your life expectancy.
Studies show that if you sit down for more than seven hours
a day, you have a 61% greater chance of dying
than if you just sit for two hours a day.
But thanks to our modern society that is dependent
on computers, most people will ignore this advice
and continue to type away at their own peril.
Number one: In astrophysics, there is a concept known as
a false-vacuum collapse.
The basic idea is that the resting state of the universe
is a state which has the lowest amount of energy.
It is commonly believed that a vacuum, such as
a vacuum of space that stretches across our universe
is the lowest possible energy state.
But what if a vacuum isn't actually the lowest
energy state of our universe?
Some astrophysicists believe that under the right conditions
an energy state lower than a vacuum could be achieved.
If a region of space developed a lower energy state
than a vacuum, the entire universe would re-crystallize
at the speed of light.
This dramatic restructuring of the universe would change
the laws of physics and all the stars, black holes,
galaxies and planets we know, could simply dissolve
as a universe reformed into an even lower energy state.
A false-vacuum collapse could happen at any time,
or even be triggered by accident, and it's likely
nothing could be done to stop it.
Thank you, all, for watching.
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