Inventions by African Americans into the 21st century include everything from toys to physics to aerospace technology.

The 21st-century civilization has faced dramatic challenges related to the ecology and welfare of every single person. Outstanding scientists and gifted engineers are busy solving actual problems, ...

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For more than 170 years, the uniquely brilliant and occasionally bizarre creations dreamt up by British inventors have been filed away in vast dank and dusty subterranean vaults ...