BRAIN TEASERS

enter your answer and press button OK

What costs nothing but is wo...

What costs nothing but is worth everything, weighs nothing, but can last a lifetime, that one person can't own, but two or more can share?

Correct answers: 28

The first user who solved this task is Djordje Timotijevic.

#brainteasers #riddles

Check your ranking on list.

Daniel Tosh: Saw Myself Naked

Saw myself naked in front of a mirror a couple days ago -- thats not the joke, thats what we called the setup. I saw myself naked, and I said, Holy cow, Im The White Man. Ive heard a lot of bad things about you, cracka.

Jokes of the day - Daily updated jokes. New jokes every day.

Follow Brain Teasers on social networks

Brain Teasers

puzzles, riddles, mathematical problems, mastermind, cinemania...

Aleksandr Onufriyevich Kovalevsky

Born 19 Nov 1840; died 22 Nov 1901 at age 61. Russian founder of comparative embryology and experimental histology, who first established that there was a common pattern in the embryological development of all multicellular animals. He studied the lancelet, a fish-shaped sea animal; about 2-in. (5-cm) long; then wrote Development of Amphioxus lanceolatus (1865). Then, in 1866, he demonstrated the similarity between Amphioxus and the larval stages of tunicates and established the chordate status of the tunicates. In 1867, Kovalevsky extended the germ layer concept of Christian Heinrich Pander and Karl Ernst von Baer to include the invertebrates, establishing an important embryologic unity in the animal kingdom. This was important evidence of the evolution of living organisms.a.k.a. Alexander Onufrievich Kovalevski. 19 Nov 1849 and 22 Nov 1901 (new style) are 7 Nov 1840 and 9 Nov 1901 (old style). Image: tunicate tadpole larva (L) and lancelet, Amphioxus (R).

This site uses cookies to store information on your computer. Some are essential to help the site properly. Others give us insight into how the site is used and help us to optimize the user experience. See our privacy policy.