Is it possible that we could one day be surprised by Martian fossils?

3 interesting chemistry questions anwsered

How dangerous Large Hadron Collider (LHC) really is?

4 intriguing psychology questions

6 Great gift ideas for learning science

Is there a rule of thumb about the minimum population required for a viable recovery of a species?

In terms of a percentage, how much oil is left in the ground compared to how much there was when we first started using it as a fuel?

Does the universe have an event horizon?

Are the barnacles that grow on whales harmful?

What is the fastest beats per minute we can hear before it sounds like one continuous note?

Carbon in all forests is 638 GtC. Annual carbon emissions by humans is 9.8 GtC (1.5% of 638). Would increasing forests by 1.5% effectively make us carbon-neutral?

What would happen if a celestial body the size/mass of the moon hit the sun at 0.999c?

If we detonated large enough of a nuclear bomb on Jupiter, could we initialize a nuclear chain reaction and create a second sun?

How much more dangerous would lightning strikes have been 300 million years ago when atmospheric oxygen levels peaked at 35%?

Is there a limit to expansion of the International Space Station?

Has it been scientifically proven that Nuclear Fusion is actually a possibility and not a 'golden egg goose chase'?

If, theoretically, you were in an infinite sized room, and there was complete darkness. If you lit a candle, how far away would you have to be from this candle before you couldn't see it?

Why hasn't evolution caused mammals to have many more females than males?

Are there organisms with more than two functional sexes?

Imagine a clock with a watch hand so long, it reaches nearly the speed of light at it's end. Is that possible somehow? 

What is the highest a mountain can be? Is there a limit to it?

What makes plastic so cheap and easy to produce as opposed to any other material?

What is generally used to cool down superconductive elements?

When I shine a laser through a piece of glass, did the photons coming out of the other side of the glass originate within the laser, or do the glass molecules produce photons with identical modes as the incident light?