Life's Little Mysteries: Science questions, answered

From delicate dandelions to mighty oak trees, millions of plants use seeds to reproduce. But where did the first seeds come from?

Coastlines are challenging to measure, but why?

The Concorde was the fastest commercial plane ever flown, but its speed came with a hefty price tag.

The number of known galaxies circling the Milky Way is increasing as we develop new powerful telescopes.

Quantum computers are here. But could we ever build a quantum laptop?

The Vikings' reputation for bloodlust compared to other medieval fighters may have been exaggerated over the years.

The far-reaching impact of certain viruses on the body can make cells grow out of control, causing cancer.

Wind can whip up to surprising speeds, depending on if it's natural or human made.

The Himalayas' massive heights result from a unique combination of geologic factors.

The first nuclear bomb test, conducted in 1945, set off an international arms race that included nuclear testing. But how many nuclear bombs have been detonated during tests and in active war?