In which year was the first ever Earth day event held?
April 22, 1970
April 22, 1870
Aprill 22, 1785
April 22, 300 BC
How much ice, on average, is being lost each year from all the mountain glaciers around the world combined?
200 billion tons
200 million tons
400 billion tons
400 million tons
How many countries officially take part in Earth Day celebrations?
The Earth day flag has an image of what in the centre?
Melting ice caps
A polar bear
NASA has been measuring sea surface height from space since 1992. Over that period, average global sea level has risen by how much?
Which well known Hollywood star hosted Earth Day 2000?