April 22 in history: Hitler accepts defeat, first Earth Day celebrated and more

From the celebration of the first Earth Day to the signing of the Paris climate agreement, we've it covered.

Let's dive in today's history!

1915

World War I: Germans use 150 tons poisonous gas on Allied soldiers at Ypres, Belgium.

(Photograph:WION)

1945

World War II: Adolf Hitler accepts defeat.

(Photograph:WION)

1970

First ever Earth Day is celebrated in US

(Photograph:WION)

1983

Russia's Soyuz T-8 returns to Earth.

(Photograph:WION)

2016

175 nations sign Paris climate agreement at UN in New York.

(Photograph:WION)

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