ET is (probably) out there -- get ready - Seth Shostak

https://www.youtube.com/watch?v=t0m8WdR1FcQ

‘City killer’ asteroid just missed Earth after it ‘snuck up’ on us, experts say

https://fox17online.com/2019/07/27/city-killer-asteroid-just-missed-earth-after-it-snuck-up-on-us-experts-say/

Americapox: The Missing Plague

https://www.youtube.com/watch?v=JEYh5WACqEk

Chocolate and red wine may hold the key to youth

https://albertonrecord.co.za/219050/chocolate-red-wine-may-hold-key-youth/

New clues on why women's Alzheimer's risk differs from men's

https://www.njherald.com/20190718/new-clues-on-why-womens--alzheimers-risk-differs-from-mens

What I learned from going blind in space | Chris Hadfield

https://www.youtube.com/watch?v=Zo62S0ulqhA

The Superheterodyne Radio: No really, that's its name

https://www.youtube.com/watch?v=hz_mMLhUinw

When We Met Other Human Species

https://www.youtube.com/watch?v=jdYwMLSNHnU

Where are all the aliens?

https://www.youtube.com/watch?v=qaIghx4QRN4

I don't agree.  We have one example of a planet capable of supporting life and there is life on it.  It is my thinking that we will have life throughout the galaxy.

Loop Quantum Gravity Reveals What Came Before the Big Bang

https://www.youtube.com/watch?v=dpmx8D5CXRA

Both fish and humans have REM-like sleep

https://www.sciencenews.org/article/both-fish-and-humans-have-rem-sleep?tgt=nr

Why I believe in UFOs, and you should too... | Ben Mezrich | TEDxBeaconStreet

I'm extremely skeptical.  There is a real lack of evidence.  

The distances between stars are so vast that the energy requirements for interstellar travel are by our standards almost infinite.  The cost of the moon program in modern dollars was around a hundred billion dollars.  Sending little robots to Mars costs several billion dollars.  Any kind of interstellar program would cost at least a trillion dollars.  It is not about money.  It is about resources required, either by us or by another civilization, which are enormous.

There are also practical considerations.  Space is very radioactive making it impractical for travel.  It takes a great deal of effort to keep humans alive in space.  Also, anything moving faster than 1% the speed of light is in danger of being obliterated by a grain of sand that happens to be in the way.  At 10% the speed of light, the super thin interstellar gasses, although almost non-existent, are enough to create considerable resistance.  I have heard that it would difficult to go any faster than this.

For this reason, if I were designing an interstellar craft, I would make it shaped like a giant needle with it being very thin.  I don't know if this is practical.

https://www.youtube.com/watch?v=urKhVssiygA