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Recent Posts

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Biology / Smart Animals Compilation
« Last post by Unbeliever on March 25, 2019, 06:01:38 PM »

Feeling secure in your human intelligence? Watch these animals show off their brains by solving problems. Who's really in charge?

Some of these animals are pretty amazing!

Technology / Drilling Square Holes
« Last post by Unbeliever on March 25, 2019, 01:59:03 PM »

Using a special drill and holder to drill square holes in material on a drill press.


General Science / No One Can Explain These Arctic Ice Holes
« Last post by Unbeliever on March 25, 2019, 01:21:59 PM »

What's the deal with these strange arctic holes that not even NASA can explain?

General Science / 173 Kiloton Explosion Over Bering Sea Was Asteroid Breaking Up
« Last post by Unbeliever on March 23, 2019, 05:08:21 PM »

Almost nobody noticed this, but back in December a chunk of space rock slammed into the Earth's atmosphere at 32km/sec over the Bering sea. The aerodynamic forces tore it apart and it released energy equivalent to a 170 kiloton weapon.

And almost nobody noticed.

Astronomy/Cosmology / TIMELAPSE OF THE FUTURE: A Journey to the End of Time
« Last post by Unbeliever on March 23, 2019, 10:52:42 AM »

We start in 2019 and travel exponentially through time, witnessing the future of Earth, the death of the sun, the end of all stars, proton decay, zombie galaxies, possible future civilizations, exploding black holes, the effects of dark energy, alternate universes, the final fate of the cosmos - to name a few.

This is a picture of the future as painted by modern science - a picture that will surely evolve over time as we dig for more clues to how our story will unfold. Much of the science is very recent - and new puzzle pieces are still waiting to be found.

To me, this overhead view of time gives a profound perspective - that we are living inside the hot flash of the Big Bang, the perfect moment to soak in the sights and sounds of a universe in its glory days, before it all fades away.  Although the end will eventually come, we have a practical infinity of time to play with if we play our cards right. The future may look bleak, but we have enormous potential as a species.

Featuring the voices of David Attenborough, Craig Childs, Brian Cox, Neil deGrasse Tyson, Michelle Thaller, Lawrence Krauss, Michio Kaku, Mike Rowe, Phil Plait, Janna Levin, Stephen Hawking, Sean Carroll, Alex Filippenko, and Martin Rees.

Astronomy/Cosmology / Do black holes contain dark matter?
« Last post by Unbeliever on March 22, 2019, 11:58:18 AM »

Black holes grow by accreting matter under gravity; so surely they should be able to accrete dark matter? So then is there loads of dark matter trapped inside black holes?

Turns out it's a bit more complicated than that because of what we know of how dark matter behaves - which isn't a lot! - but it's enough.

Mathematics / Are Prime Numbers Made Up?
« Last post by Unbeliever on March 21, 2019, 05:19:28 PM »

Is math real or simply something made up by mathematicians? You can’t physically touch a number yet using numbers we’re able to build skyscrapers and launch rockets into space. Mathematician Kelsey Houston-Edwards explains this perplexing dilemma and discusses the different viewpoints that philosophers and mathematicians have regarding the realism of mathematics.


General Religion / A Universe Not Made For Us (Carl Sagan on religion)
« Last post by Unbeliever on March 20, 2019, 12:15:03 PM »

Carl Sagan reading from his book "The Demon Haunted World: Science as a Candle in the Dark"

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