This Day, That Year – April 3

David McIntyre and Sir Douglas Douglas-Hamilton made the first aeroplane flight over the summit of Mt. Everest on this day in 1933.

Did you know that:

• Jane Goodall is an English primatologist and anthropologist born on this day in 1934
• The first atomic-powered spacecraft (SNAP-10A) was launched on this day in 1965
• Francis W. Dorion was granted a patent for a dual razor blade assembly on this day in 1973