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25 largest man-made things too large to fully comprehend

Explore the 25 largest man-made things too large to fully comprehend. From colossal dams to entire indoor cities, discover ...
list25 on MSN

25 man-made things that are nearly impossible to destroy

Discover 25 man-made things that are nearly impossible to destroy. Explore the science of extreme durability, from tungsten ...
동아사이언스

Mass of Human-Made Objects Now Outweighs All Life on Earth

It may contain inaccuracies due to the limitations of machine translation. A view of Seoul, covered with man-made structures such as buildings and roads. The total mass of artificial objects created ...
AOL

This Is The Fastest Speed Ever Recorded For A Man-Made Object

An artist's concept of the Parker Solar Probe spacecraft approaching the sun. - NASA/Johns Hopkins APL/Steve Gribben -- CC Public Domain / Wikimedia Commons In 1986 ...