A dinner menu signed by Albert Einstein at a 1930 fundraising event in London attended by more than 370 people was sold at auction in Britain for £18,000.
Today, on March 14, various events are taking place in many countries around the world to mark the International Day of Rivers or the fight against dams. The event was launched to raise public awareness of the negative impact of dams on river ecosystems and to engage humanity in the fight against dams.