Human-made objects now weigh more than all living things combined, according to a study by the Weizmann Institute of Science. Infrastructure, plastics, glass, and paper contribute to the mass, while biomass, mainly plants, make up the majority of living things. Human production has increased significantly since the early 20th century, with enough material produced weekly […]
Aircraft carriers are owned by nine nations, with the US owning 12. They are built from modular components called superlifts and cost around $4.5 billion each. The Nimitz-class carrier is one of the most popular types, powered by nuclear reactors, and can go years without refueling. Aircraft carriers are the centerpieces of the world’s most […]
Wind farms require a location with strong and consistent wind flow, ideally on open plains or offshore. Placement near existing power lines can reduce costs. Electricity generated enters the main power grid, and access to transmission lines can be a challenge. Construction costs are high, and compensation for private landowners may be necessary. Seeking out […]
Aircraft carriers are owned by nine nations, with the United States owning 12. They are built in drydocks using modular components and cost around $4.5 billion each. The Nimitz-class carrier is one of the most popular types, powered by nuclear reactors and can go years without refueling. Aircraft carriers are the centerpieces of the world’s […]
The Cannon Coaster at Coney Island was designed to jump a gap in the tracks, but sandbag tests showed it was too dangerous. No one was hurt, but the coaster was eventually filled in. Coney Island was once the largest amusement area in the US, but now has two major parks and hosts events like […]
The built environment includes man-made structures and infrastructures, and must be functional and healthy for all. Human behavior experts and urban planners work to discover the most positive use of space. There are concerns about the health impact on people, especially in low-income areas. Sustainability is a recent concern, with green energy sources and building […]
The builders of the pyramids were not slaves, as previously believed, but paid workers who were buried honorably near the pyramids. Archaeologists found well-preserved skeletons of pyramid builders, along with containers of beer and bread for the afterlife. Building pyramids was hard work and the workers worked in three-month shifts, with signs of poor health […]
