Science

Tobacco, whose leaves are the source of nicotine, was cultivated by people living in America two thousand years before its discovery by Columbus.

Nicotine is an organic chemical compound (C10H14N2) from the group of pyridine alkaloids.

It consists of 75% water.

It is the body’s largest glandular organ.

Pure high-quality silver contains at least 99.9 percent of this metal.

Graphene is an allotrope of carbon consisting of a single layer of atoms arranged in a two-dimensional honeycomb nanostructure (an intermediate-sized structure between microscopic and molecular structures).

A memento of annihilation–the Chicxulub crater.

There was a chamber decorated with six tonnes of amber, known as the Amber Room.

After the first period of rapid expansion, the universe began to cool.

Most of the dunes are located near the equator.