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March 14, 2017
An X-ray tomographic picture of fossil thread-like red algae, tinted to show detail, unearthed in central India may represent the oldest-known plants on Earth, dating from 1.6 billion years ago, according to research published in the journal PLOS Biology in this image released March 13, 2017. Courtesy Stefan Bengtson/Handout via REUTERS
Fossils from 1.6 billion years ago may be oldest-known plants
March 14, 2017 - 3:02pm
July 1, 2016
Worthington's Lake Okabena is home to the annual Windsurfing Regatta, but it's also listed as a state "impaired water."
Column: Lake Okabena -- a path to becoming algae-free
July 1, 2016 - 9:26pm
October 21, 2015
Okabena-Ocheda Watershed District Administrator Dan Livdahl captured this image of an algae bloom along Sailboard Beach on Lake Okabena Tuesday. Livdahl said the bloom, which gives the appearance of thick, blue-green paint along the lakeshore, likely settled along the shoreline because of warm air temperatures and a lack of wind. Submitted Photo
Algae Alert
October 21, 2015 - 8:38pm
September 3, 2015
Decaying algae floats up to the boom located underneath the pedestrian bridge at Centennial Park earlier this week. Submitted Photo
Lake Okabena’s green... again: Local residents contribute to harmful algae
September 3, 2015 - 9:36pm
July 2, 2015
Blue-green algae a health risk
July 2, 2015 - 9:56pm
June 11, 2015
Letter: Take a closer look at our algae problem
June 11, 2015 - 5:17pm
April 29, 2014
Okabena-Ocheda Watershed District Administrator Dan Livdahl (left) demonstrates to Minnesota West students how the burlap fabric will be attached to the floating island.  Julie Buntjer/Daily Globe
Creating habitat
April 29, 2014 - 8:53pm
November 17, 2013
Algae that was near the surface of the water was suspended in the ice of Lake Okabena near Ehler’s Park in Worthington last week. (Brian Korthals/Daily Globe)
Lake algae hangs around
November 17, 2013 - 11:13pm
August 14, 2013
A lake weed harvester floats across Schmidt Lake in Plymouth last week prior to demonstrating how the rolling drum is lowered onto the top of the water to cut and skim plant growth. The machine is also marketed as a product that can skim algae off a lake. (Submitted Photo)
Skimming the surface
August 14, 2013 - 10:36pm
July 23, 2013
Billions of blue-green algae float on Lake Okabena Monday morning in Worthington.
Bad bloom: Why is Lake Okabena green?
July 23, 2013 - 2:06pm
June 6, 2013
Dan Livdahl uses a Secchi disk to measure water clarity in Lake Okabena Thursday afternoon in Worthington. (Brian Korthals/Daily Globe)
Clearly better
June 6, 2013 - 10:04pm
June 28, 2012
Julie buntjer/Daily Globe
Okabena-Ocheda Watershed District Administrator Dan Livdahl scoops up some of the blue-green algae floating in Lake Okabena.
Blue-green algae returns to Lake Okabena
June 28, 2012 - 8:54pm
October 11, 2010
Julie buntjer/Daily Globe
Okabena-Ocheda Watershed District Administrator Dan Livdahl surveys the algae bloom at the boat landing in Ehlers Park Monday morning on Lake Okabena.
Lake Okabena's odd odor
October 11, 2010 - 8:47pm
July 30, 2010
Dan Livdahl, administrator of the Okabena-Ocheda Watershed District, takes a water sample from Lake Okabena at Centennial Beach Friday morning.
Decaying algae odor in the air
July 30, 2010 - 9:44pm
February 12, 2010
submitted photo
These photos, taken by Okabena-Ocheda Watershed District Administrator Dan Livdahl show the effects of an algae bloom on Lake Okabena. This photo was taken along Sailboard Beach in September 2008.
Lake algae a concern
February 12, 2010 - 12:00am