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Among the assets that TenMarks brought to Amazon was an existing customer?base of more than 25,000 schools in 7,000 districts. TenMarks has traditionally used?a freemium model,?allowing teachers to sign up for free, but requiring them to?pay for certain features.

Among concerns is that burning ammonia produces polluting nitrogen oxides, which modern coal-fired plants are built to capture, but would require adaptations at gas power stations.

Among 15,158 middle-aged, 45-64 years, participants in the Atherosclerosis Risk in Communities Study, researchers found that the risk of developing VTE for the first time was 1.7 times higher in those who reported they watch TV "very often" compared with those who watch TV "never or seldom."

Amid further containment of the COVID-19, China is powering ahead in returning to work and resuming business and production.

American Airlines also said Thursday that it now expects the grounding to reduce pretax earnings this year by 0 million, up from the 0 million impact it previously anticipated.