What percent of vehicles sold in California were ZEV (Zero-emission vehicles) in 2021?

Factful math: Grade 4th-6th

Math skills: Percent

Related Environmental issues: Air / Climate change / Electric vehicles

California plans to stop selling gasoline-powered vehicles and sell only ZEVs (Zero-emission vehicles) by 2035.

About 2 million vehicles were sold in California in 2021. Among those vehicles, 250 thousand vehicles were ZEVs.  About what percent of vehicles sold in California were ZEVs in 2021?

ANSWER  about 13%

250 / 2000 x 100 = 12.5 = about 13%

Source: California Energy Commission, New ZEV Sales in California

Note: ZEV here includes BEV, PHEV, and FCEV.


How much water does a pair of jeans take to produce?

actful math: Grade 3rd-5th

Math skills: Division

Related Environmental issues: Water conservation

The Fashion industry is the second largest water consumer in the world.

It takes about 2,000 gallons of water to produce a pair of jeans. A standard bathtub holds about 40 gallons. About how many bathtubs can 2,000 gallons of water fill with?

ANSWER  50 bathtubs

2000 / 40 = 50

Source: World Economic Forum, 2020. These facts show how unsustainable the fashion industry is.