Ballard, Robert (b 1942) – In 1985, discovered the sunken wreck of the luxury liner RMS Titanic, some 73 years after she went down on her maiden voyage across the Atlantic after colliding with an iceberg.
Cousteau, Jacques-Yves (1910 – 1997) – Among many other accomplishments, co-developed the Aqua-Lung. Early conservationist, marine explorer, film-maker, innovator.
Hansen, James (b 1941) – Remarkable scientist who’s been warning the public about the dangers and consequences of Climate Change for decades. Read his bio on Wikipedia.
Kolbert, Elizabeth (b 1961) – Recently wrote a beautifully written piece in The New Yorker entitled Greenland is Melting. Is also the author of the 2015 Pulitzer Prize winning The Sixth Extinction: An Unnatural History.
“It may seem impossible to imagine that a technologically advanced society could choose, in essence, to destroy itself, but that is what we are now in the process of doing.”
Palissy, Bernard (~1510 – ~1589) – Frenchman credited with, among many other lifetime accomplishments, accurately describing the Hydrologic Cycle.