risk

Pesticide Risk Increases Over Time

Submitted by Kevin Hansen on January 5, 2012 - 20:01

A very important shift may be occurring in our understanding of pesticides: risk may increase over time, rendering even very small amounts of pesticides such as some nicotine-based neonicotinoids much more toxic than previously realized.

Dutch researcher Dr. Henk Tennekes, with Dr. Francisco Sanchez-Bayo of Australia, have shown this in a new article in the Journal of Environmental & Analytical Toxicology: "Time-Dependent Toxicity of Neonicotinoids and Other Toxicants: Implications for a New Approach to Risk Assessment" that is an open-access research article downloadable with the link shown above. I corresponded with Dr. Tennekes, who summarized his deep concerns:

"By Dr. Henk Tennekes

AN ECOLOGICAL DISASTER THAT WILL AFFECT US ALL

Nicotine Bees - Trailer

Jul 09 2010
Nicotine Bees - Trailer Video Thumbnail

Buy Nicotine Bees on DVD: http://www.amazon.com/Nicotine-Bees-Kevin-Hansen/dp/B002R8AU4Y

Posted by Kevin Hansen |

Imidacloprid contaminates the pollen of seed-coated crops : A high risk for bees

Submitted by Pierre Terre on May 20, 2010 - 23:17

Conclusions for Imidacloprid (Gaucho) :

  • A long persistence / soils (t1⁄2 = 9 months)
  • An uptake in flowers (mean level at 7 ng/g)
  • Mean level at 2-3 ng/g in pollen
  • Subletal effects at 2-4 ng/g (4 days)
  • Chronic mortality from 0.1 ng/g (10 days)
  • Main metabolites as much toxic as imidacloprid for bees
  • High risk for the beehives (PEC/PNEC >> 1)
  • Synergies with other pesticides, pathogens and parasites
  • Generalization of these results to nicotinoids and pyrazoles (clothianidin, thiamethoxam, fipronil...)
Location: 
Montpelier
France
44° 15' 36.2124" N, 72° 34' 31.3932" W

Location

Montpelier
France
44° 15' 36.2124" N, 72° 34' 31.3932" W

List of Worldwide Studies Linking Imidacloprid to Honeybee Death and the CCD Problem

Submitted by Pierre Terre on May 20, 2010 - 22:18

Aguera, A., E. Almansa, S. Malato, M.I. Maldonado, A.R. Fernandez-Alba. 1998. Evaluation of photocatalytic degradation of imidacloprid in industrial water by GC-MS and LC-MS. Analusis 26(7): 245-251.

Global Oil Supply Crunch: Peak Oil and Why the Oil Wells are Running Dry

Jun 22 2007
Global Oil Supply Crunch: Peak Oil and Why the Oil Wells are Running Dry Video Thumbnail

Oil is a finite resource. Now, even conservative analysts at Lloyds of London insurers and Chatham House consultancy are predicting oil prices rises to $200/bbl in a new report.

Read the original report from Lloyds of London and Chatham House here.

In our short film featuring Pierre Terre, with Bill Burke of the Post Carbon Institute, we find out about "Peak Oil" and why so many oil/gas wells are running dry. We see California oil wells and their ugly, toxic tar residues.

Across the world, oil production is highest just as we reach the end of the lifetime of many oil and gas wells. The year 2010 was predicted as the peak production year.

This is the "Peak Oil" problem.

See http://www.postcarbon.org/node/813

Posted by Pierre Terre |
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