精东影业

Estimated jobs lost among brick-and-mortar stores because of Amazon sales by the end of 2015: 295,000 ¹

Number of U.S. workers Amazon employed at the end of 2015: 146,000

Number of robots working in Amazon warehouses at the end of 2014: 15,000 ²

At the end of 2016: 45,000

Number of items a warehouse worker is expected to retrieve in a 10-hour shift: 1,200

Pounds of carrying capacity of one Amazon Kiva robot: 700

^3, 4

Border Patrol cameras now monitoring the Mexican border and ports of entry: 8,000 ⁵

Underground sensors: 11,000

Miles of border fencing that already exist: 688.6 ⁶

Cost per mile of border fence constructed in 2007 by the Army Corps of Engineers and National Guard: $2.8 million

Cost per mile of fence constructed in 2008 by mostly private contractors: $3.9 million

Estimated cost per mile for the border wall called for by President Trump: $27 million ⁷

Percentage of Earth’s oxygen provided by rainforests and other land plants: 28 ⁸

Percentage of Earth’s oxygen provided by ocean plants, including phytoplankton and kelp: 70

Average number of breaths a person takes in a day: 23,040 ⁹

Breaths for which phytoplankton Prochlorococcus provides the oxygen: 1 in 5

^10 11 12

¹³

1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Wansink & Ittersum, American Dietetic Association
12. 13.

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Stephen Miller is a Ted Scripps Fellow in Environmental Journalism at the University of Colorado and a former senior editor of 精东影业

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