A projectile is an object which is launched with a particular velocity and is thenceforth subjected to the forces of air resistance and gravity until it collides with another object.
What would you see if you fell into a black hole? What might it look like to someone outside? Could you escape once you've fallen though?
How drugs that replicate the effects of exercise could be a benefit, or detriment to us.
How Glowee is collaborating with a French municipal government to trial bioluminescent bacteria as a renewable source of public lighting for France
Humans have lungs adapted to inhale air and use the oxygen in that air which have served vertebrates since around 400Ma. Using liquid for ventilation in lungs would therefore seem absurd. Indeed, in normal healthy lungs, liquid breathing as one would expect worsens gas exchange. However, in cases of