chaotic atmosphere two-week weather forecast limit

Chaos limits detailed weather forecasts to about two weeks

~2 weeks

Tiny differences in the atmosphere can grow into large differences in weather. Because of this chaotic behavior, there is a basic limit to how far ahead detailed day-to-day weather can be predicted. That limit is roughly two weeks.

A sea trade in jade lasted more than 3,000 years

3,000+ years

An ancient sea trade network connected Taiwan, the Philippines, and other parts of Southeast and East Asia. Jade was mined in Taiwan and much of it was worked in the Philippines. The network lasted at least 3,000 years and began before the Silk Road.

China’s births skewed sharply male

120 boys per 100 girls

By the late 1990s, 120 boys were born in China for every 100 girls. The one-child policy contributed to this skew, along with son preference, sex-selective abortion, infanticide, and female births that went unreported.

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chaotic atmosphere two-week weather forecast limit

Chaos limits detailed weather forecasts to about two weeks

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