Note: As Mike Yassa, the lead author on the study, pointed out to me, the study did not actually test whether consuming caffeine before a task enhances memory, the problem being that other confounding factors can then lead to difference in performances on the test.
The US debt is more than $20.1 trillion, the largest in the world. Here are the 3 reasons it grew so large, and how it damages U.S. economic growth. The US debt is more than $20.1 trillion, the largest in the world.
Total US debt soars to nearly $60 trn, foreshadows new recession. Get short URL. America-its government, businesses, and people-are nearly $60 trillion in debt, according to the latest economic data from thethe St. Louis Federal Reserve.