Raindrops aren’t tear-shaped

What if snowflakes actually looked like pizza slices and hail stones resembled pretzels? In a research conducted as a part of NASA’s Global Precipitation Measurement mission, scientists have discovered that raindrops look like hamburger buns!

• • •

Our planet: The Blue Marble

On 7th December, 1972, the crew members of Apollo 17 spacecraft took a photograph of the Earth. This photograph, known as The Blue Marble, gives a clear idea as to why we know Earth as the Blue Planet. The earth’s surface contains more than 70 per cent water distributed in the oceans.

• • •

Peregrine falcon: the fastest on Earth

The peregrine falcon, earlier known as the ‘duck hawk’, is the fastest flying bird on the planet. With an average diving speed of 320 km/h during its hunting stoop, the bird becomes the fastest living creature in the world. The peregrine falcon holds the record for the maximum airspeed of 389 km/h. Barring extreme polar regions, high mountains, and tropical rainforests, one can find peregrine falcons almost everywhere on earth. Geographically, this bird is not only the most widely found bird of prey, but one of the most widespread bird species on the planet as well.

• • •

Remembering Agatha Christie

‘Plots come to me at such odd moments, when I am walking along the street, or examining a hat shop…suddenly a splendid idea comes into my head.’ – Agatha Christie, An Autobiography

• • •

The total blood supply required by the brain

Every minute 750 ml of blood gets pumped through your brain, which is merely 15–20 per cent of blood flow from the heart. An adult brain requires about 20 per cent of the body’s oxygen. To meet this requirement, and other metabolic needs of the neurons, approximately 20 per cent of the blood flow is directed to the brain. Lack of adequate supply of blood to the brain can result in cerebral strokes or haemorrhages.

• • •