Human Biology

Why is it that the liver can (to an extent) regenerate but other vital internal organs cannot?

World

Why Americans use drywall instead of concrete and bricks to build houses in areas prone to natural disasters?

Planet Earth

How do deserts form? Where are those sands coming from?

World

Why do Asian countries have a much smaller rate of obesity than the US?

How things work

Why does alcohol leave a smell on our breath?

Living Creatures

Why do pigeons thrive better inside cities than any other bird?

Science and Technology

Why are things shiny (or shinier) when wet?

World

What is the difference between an Empire, Kingdom, Duchy and Republic?

World

If human civilization ended tomorrow, how long would it take for all evidence of our existence to disappear?

Science and Technology

Why can't GIFs be compressed in the same way videos can?

Human Biology

What is seizure and what causes it?

Planet Earth

How did the oceans get polluted with mercury?

Human Biology

Why do athletes take ice baths?

Human Biology

What is Multiple Sclerosis, also known as MS?

World

Why do Asian tourists in the West wear medical face masks?