Local
MPCA proposes increase in water quality permit fees
Pollution officials consider raising water quality permit fees for the first time in 25 years.
Science
Online therapy a growing option in Minnesota health care
Online CBT has been proposed as a solution for years to shortages of therapists or to other barriers that make it hard for patients.
Science
No shield from X-rays: How science is rethinking lead aprons
The about-face is intended to improve care, but it will require a major effort to reassure regulators, health care workers and the public.
Local
'Revenge porn' cases have Minn. lawmakers looking for a fix
Legislators and courts attempt to balance privacy with free-speech rights.
Science
Minneapolis-St. Paul Airport's quarantine station is on guard
It is part of national effort to screen for coronavirus.
South Metro
![Rocky the sea otter flashed a smile as he swam around in his off-exhibit pool while he spent the afternoon behind the scenes Wednesday. ] ANTHONY SOUF](https://arc.stimg.co/startribunemedia/JNEO6R47NPRFHANNC7BP753ZMI.jpg?h=91&w=145&fit=crop&bg=999&crop=faces)
Minnesota Zoo's sea otter thrives after being first to have flipper amputated
Limb amputation is common in cats and dogs, but no one had heard of a flipper amputation on an otter.
St. Paul
![Arborist Tim Walsh used a wrench to remove bark from wood infected with Emerald Ash Borer Wednesday afternoon. ] Aaron Lavinsky • aaron.lavinsk](https://arc.stimg.co/startribunemedia/UX7OFFOV7BWTFFELRHB54XO45E.jpg?h=91&w=145&fit=crop&bg=999&crop=faces)
Processing wood infested by emerald ash borer into fuel or mulch has a cost
Emerald ash borer's toll keeps growing, but processing the tree waste into fuel or mulch carries a cost.
Science
This is how the opioid crisis swept the nation
A deeper look at the broad trends of the three waves shows how each drug — pills, heroin and then fentanyl — prepared the way for the next.
Science
Giant tortoise is helping save his species from extinction
Since the program started, Diego and the two remaining Espanola males and their offspring have boosted their subspecies population to more than 2,000.
Science
Empowering kids to learn how to respond to climate threats
Since 2015, NOAA's Environmental Literacy Program has awarded nearly $10 million to 22 resiliency programs across the country.
Science
Nation
NASA releases video of first space-baked cookies
Italian astronaut Luca Parmitano used trial-and-error to bake five frozen cookies in the prototype zero-G oven.
Local
Minnesota's battle over wells, water and nitrates lands in one farmer's back yard
The DNR wants a study of vulnerable groundwater in Pineland Sands region.
Science
With a shortage of obstetricians at rural hospitals, the answer may be: Call the midwife
In a new Mayo Clinic study, certified nurse midwives provided round-the-clock staffing and coordinated with obstetricians on prenatal care and deliveries.
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Science and Technology
News coverage and feature stories on the latest in the world of science and tech.