Menu Close

Articles on Daylight

Displaying all articles

The Sun rises in Midland, Michigan, shortly after 8a.m. on Jan. 13, 2017. Christian Collins/Flickr

How the Earth’s tilt creates short, cold January days

The winter solstice is past, but bundle up – January is when winter really arrives in many parts of the Northern Hemisphere.
Lots of positive pregnancy tests this time of year. Kristina Kokhanova/Shutterstock.com

‘Tis the season for conception

Did you ever consider that human beings might have a breeding season? Birth seasonality exists – and has interesting implications for childhood disease outbreaks.

Top contributors

More