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Roblin Review in Roblin, Manitoba

28 Aug 1990

Page 12

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Roblin Review August 28, 1990 Page 12 old newspaper archives

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Newspaper

Roblin Review

Location

Roblin, Manitoba, Canada

Date

Aug 28, 1990

Page

12

North America Built From Seven Microcontinents, Says Scientist

Dr. Paul Hoffman of the Geological Survey of Canada argues that North America formed from seven microcontinents that coalesced into Laurentia about 1.85 billion years ago. New zircon dating links collisions to Precambrian rocks, while later heat produced igneous rocks across the continent.

MENTIONED IN THIS ARTICLE

Lorraine Brown Geological Survey of Canada Ottawa North America Laurentia Paul Hoffman Pangea Eurasia Hoffman Americas Greenland Europe California Labrador Rockies Appalachian Mountains Geological Society of America Canadian Science News Coronation Gulf Nwt P. Hoffman
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Phototoxins From Plants Could Aid Mosquito Control

University of Ottawa researchers report plant produced phototoxins burn insects that eat them and may combat malaria vectors such as mosquitoes and black flies. Thiophenes from marigolds and St John’s Wort absorb sunlight to release a toxin, degrade within days, and are highly effective against larvae at tiny dilutions with minimal impact on other life. public health use would require WHO backing.

MENTIONED IN THIS ARTICLE

John Eberlee University of Ottawa John T. Arnason Arnason Peter Morand Bernd Philogene Morand St. John’s Wort World Health Organization Canadian Science News
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GSC Manitoba Metis Federation Manitoba The Manitoba Metis Federation Inc Federation McGragor Street Winnipeg MMF Parkway Inn Sportsman's Bar Fiddlin Red Humphrey Pv.c Bow Bay Cay Sid’s Roblin Roblin-Russell Shortdale Hall Bield Community Centre Bie Rupeesy Ray RCH Dr. W.B. Garnett T.F. Watters Russell Clinic Dowlers Furniture Warehouse Dauphin Dowlers G.st Liberals Neil Stewart Second Avenue
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