Born on July 30, 1920, geologist and cartographer Tharp changed scientific thinking about what lay at the bottom of the ocean – not a featureless flat, but rugged and varied terrain.

Earlier researchers – particularly Alfred Wegener – noticed how well the coastlines of Africa and South America ... s topography and create a physiographic map. Tharp’s careful plotting ...

Africa’s remaining tropical glaciers are rapidly disappearing as greenhouse gas emissions drive global warming. In the ...

Africa has the most countries of any continent with a total of 54. Rather than following natural terrains or historical boundaries, many of its borders are strikingly straight in some areas and ...

South Africa must now work hard to diversify its trade with other nations, move beyond reactive diplomacy by setting the agenda in global trade, security, and finance negotiations, and be honest ...

Still, when all due allowance is made for these drawbacks, there is no denying that Ptolemy's map of North-Eastern Africa bears a wonderful resemblance to reality—just the resemblance that might ...