Satellite watch: Lake Michigan’s tendril plume

On Dec. 17, a NASA satellite sailed over southern Lake Michigan after winds whipped up a tendril-like sediment plume. The satellite captured an image of the plume that caught the eye of the people behind the NASA Earth Observatory, an online repository of satellite images, photographs and other illustrations of both natural phenomena and human impacts on the planet. The plume results from winds blowing in from the north that set the water in southern Lake Michigan circulating in a counter-clockwise pattern called a gyre. The movement stirs up sediment from the lakebed, according to the Observatory.

Alien algae alarms aquatic experts

An invasive species of algae is threatening to disrupt the ecological balance in Michigan lakes and waterways.

It’s a form of seaweed called starry stonewort.

It can increase the potential for winterkill when lakes freeze over because the algae take up oxygen that fish need to survive.

Our favorite reader comments of 2010

Annually the Echo staff collects our favorite comments of the previous year.

For the next three days we will publish a sample of the reader reactions that our reporters enjoyed in 2010.

Here’s the start:

Most read Echo stories of 2010

Here’s a list of the most viewed Echo stories of 2010. In the world of social media, how much should readership trends influence what we provide? A lot? A little? Not at all?