Spring

Steve Baker

This week on Points North, millions of people cross the Straits of Mackinac each year. But it’s also a highway for thousands of raptors - or birds of prey - that migrate over the Straits each spring.

Plus, after beating his own addiction to drugs, an advocate trains others to respond to an overdose.

It's been spring for 22 days now, but the ice hasn't melted and snow is still falling.

Mark Torregrossa, chief meteorologist with MLive and farmerweather.com, joined Stateside Tuesday to discuss just how normal these weather patterns are, and how long we should expect them to last.

These maps show the early arrival of spring

Feb 28, 2017

Scientists have known that spring is arriving earlier across the U.S. because of climate change. Now, you can take a look at new maps from the U.S. Geological Survey to see how early spring is arriving where you live.

Jake Weltzin is an ecologist with the USGS, and the executive director of the National Phenology Network.

"The folks down in the southeastern United States, across much of that region, are seeing spring coming as many as three weeks early this year," he says.

Frogs really sing in earnest after dark.

They drink and breathe through their skin without a filter and are very sensitive to environmental changes. Scientists can determine the health of an area by measuring how much the frog and toad population is increasing or decreasing – sort of like a canary in a coal mine. How does Michigan’s Department of Natural Resources count the number of frogs and toads across the state?