What's happening?

On Sunday night, British director Christopher Nolan won the prize he had been waiting for his whole life: the Academy AwardHollywood's most prestigious honour, awarded annually since 1929 by Academy of Motion Picture Arts and Sciences. The Golden Globes is often seen to predict potential Academy Award winners. for Best Picture. His film Oppenheimer won seven awards at this year's Oscars ceremony.

Oppenheimer explores the life of J Robert Oppenheimer: the American scientist who helped to create nuclear weaponsA bomb or other weapon that uses nuclear energy to cause a big explosion. .

Oppenheimer's actions changed the world forever. In August 1945, the US governmentThe group of people who govern - or lead - the country. dropped two bombs on Japanese cities. Japan gave in and World War TwoA global war that lasted from 1939 to 1945 and included all of the great powers. ended.

Afterwards, countries rushed to build their own. As a result the world is always at riskThe chance or possibility of something bad happening. of nuclear war. A single nuclear weapon can destroy a city. Some think the world would be a better place if they were never invented.

Find out more

Others think nuclear weapons have stopped another world war. The last 80 years have been quite peaceful. Some countries may have decided not to go to war, because they knew the other side had nuclear weapons.

Do nuclear bombs make us safer?

Yes! Since 1945, there has not been another world war. Countries know it is a bad idea due to the risk of nuclear weapons. And so nuclear weapons have saved lives.

No! Nuclear weapons mean one person with their finger on one button can do a huge amount of damage. This does not make us safer.