2. Old Trend: The Latinization of America.

New Trend: The Asiafication of America.

“The huge boom in Mexican immigration is over.” The improving Mexican economy, lower Mexican fertility, the U.S. construction bust, and increased enforcement have combined to bring net Mexican immigration to zero or negative since 2008. That bears repeating: On net, Mexicans are no longer moving to the United States at all. So who is? Lots of people, but Asians more than anyone. Asians are moving here at a rate of about half a million a year, and the Asian-American percentage of the population has already reached 6%. Most studies say immigration is good for the economy, so this is good news, especially because many of the new Asian arrivals are high-skilled, entrepreneurial types who will start businesses and hire the rest of us.

3. Old Trend: The Chinese population bomb.

New Trend: The Chinese population bust.

In 2012, the working-age population of China fell by 3.45 million. In other words, last year China lost a number of workers approximately equal to the entire population of Lebanon. This year the drop will be bigger, and the drops will accelerate through the 2030s. That means that China’s inexhaustible supply of cheap labor is going to be exhausted a lot faster than most people expected. Nor will repealing the infamous one-child policy cause a Chinese baby boom – in some small areas where it was repealed, fertility rates remain below the national average. This population crunch won’t put that huge of a dent in China’s billion-strong workforce, but it will boost investment in a lot of other poor countries and will force China’s industries to move up the value chain very quickly or risk the “middle-income trap”.

4. Old Trend: Soaring U.S. CO2 emissions.

New Trend: Plummeting U.S. CO2 emissions.

Thanks a little bit to economic stagnation, but mostly to the boom in natural gas, the U.S. – the only large rich country not to sign the Kyoto Protocol – has seen its CO2 emissions tumble to levels not seen since the early 1990s. More drops are expected to follow. Global emissions (that's what really matters) continue to soar, but China is the main driver now. The U.S. is subtracting from total emissions growth now. Of course, that doesn’t count methane emissions, which are released when natural gas is fracked. But the United States is no longer the global carbon bad-boy it was in the '90s.

5. Old Trend: College is becoming more and more important.

New Trend: College is no more important than before.

If you want a good job, go to college. This has been a maxim of American life since the 1980s, when the “college premium” – the extra income boost from going to college – truly soared into the stratosphere. But an interesting thing has happened in the last decade and a half – the college premium has stagnated. College is still valuable, but by at least one measure, it's not getting more valuable each year. Perhaps that's why American college enrollment declined last year. Expect that to put a damper on skyrocketing college tuition and soaring student loans.