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Articles written by Dr Kirsten Peters


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  • Rock Doc

    DR KIRSTEN PETERS|Updated Sep 5, 2013

    It sounds like science fiction when you first hear about it, but some people see it as a way of addressing both animal welfare issues and environmental concerns. I’m talking about growing meat cells for human consumption from stem cells harvested from a cow. This so-called “cultured beef” recently was unveiled in London by a group led by Mark Post, a physiologist at the Netherland’s Maastricht University. It’s been known for a while that an anonymous donor contributed money toward an effort to grow a hamburger patty in...

  • Roc Doc

    DR KIRSTEN PETERS|Updated Aug 8, 2013

    I recently pulled some weeds in my yard. Sometimes I’m glad to have a little simple work where I can see progress, even if the effects of my labor are only temporary. I can only do a little bit at a time, having to take it slow due to arthritic knees. But one thing about pulling weeds in August stands out even when taken in small doses; it’s hot work. With the sun beating down on us, warming the whole nation, it’s easy to wonder if solar power will some day replace fossil fuels as our mainstay energy resource. That could...

  • Rock Doc

    DR KIRSTEN PETERS|Updated Jul 24, 2013

    We live in a time in which most animals are relatively small. If you think back to your exposure to the Ice Age, perhaps in elementary school, you may remember big mammals like the mastodon and the saber tooth tiger. Less famous but equally big was a deer the size of a modern elk and a beaver the size of a black bear. In sum, our ancestors – the people alive in the Ice Age – were small compared to a number of the animals around them. Dinosaurs are also famously large. How dinosaurs grew to be as large as they did has alw...

  • Stalagmites speak of climate history

    DR KIRSTEN PETERS|Updated Jul 17, 2013

    Some of the interesting features of certain caves are stalactites and stalagmites, the column-like features that hang down from the ceiling and are built up from the floor. Humans have known of their existence since time immemorial, but it’s only in recent years we’ve realized they have a story about climate to tell us. As reported recently in Science Express, researchers led by a team at the Georgia Institute of Technology studied four stalagmites from Borneo. The stalagmites are made of calcite, a relatively soft min...

  • Rock Doc

    DR KIRSTEN PETERS|Updated Jul 10, 2013

    Each year at this time thousands of tourists embark on cruises along Alaska’s stunning coastal waters. If they are lucky, the tourists experience dry weather, relatively calm seas, and breathtaking vistas. In some places the ships can get up close and personal to dramatic scenes of glaciers "calving" ice that breaks off and falls into the ocean. Although I've hiked up to glaciers in the Rockies and walked across them, I've never seen them entering the sea. I'd like to do that and have the notion recorded on my "bucket l...