Environmental

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Recent Posts

A new mechanism is identified that leads to the creation of new species, changes in a sense organ
Posted on 20 Dec 2008 by Thomas H. Clarke, Jr.

Prior posts have discussed the multiple and various ways by which "Darwinian" selection occurs, many involving processes that Darwin could never have imagined (e.g., selection at the atomic and molecular level, selection at the planetary level... Read More

Perchlorate found in powdered infant formula
Posted on 15 Apr 2009 by Thomas H. Clarke, Jr.

Perchlorate occurs naturally in the environment; it's also made for use in rocket propellant, explosives, fireworks, and road flares. Perchlorate has been found in drinking water in some areas of the country, as well as in food and *** milk. [See... Read More

One key to antibiotic resistance in bacteria is elucidated in a new study
Posted on 14 Sep 2009 by Thomas H. Clarke, Jr.

While it has been demonstrated repeatedly that antibiotics can act as a selection factor in the evolution of resistance in bacteria, in some cases the exact biochemical mechanism for resistance has remained a puzzle. A recently published study in the... Read More

Scientists identify for the first time the transfer of functional genes from symbiotic bacteria to host animal
Posted on 14 Apr 2009 by Thomas H. Clarke, Jr.

Most aphids host mutualistic bacteria, Buchnera aphidicola, which live inside specialized cells called bacteriocytes. Buchnera are vital to the aphids’ well being since they provide essential amino acids that are scarce in its diet. New research... Read More

Was oxygen present in quantity on Earth a billion years before the current accepted time-frame? Perhaps so
Posted on 16 Apr 2009 by Thomas H. Clarke, Jr.

This is the first in a series of posts over the next week that addresses various issues related to the evolution of life on Earth. The purpose is to show the ever-growing body of knowledge, and how that knowledge is changing fundamental assumptions about... Read More

OEHHA prioritizes chemicals for evaluation for listing under Prop. 65
Posted on 10 Jul 2009 by Thomas H. Clarke, Jr.

Prior posts have discussed the nature and procedure of California's Proposition 65. A recent meeting of the Carcinogen Identification Committee examined 38 chemicals to determine the priority with which OEHHA should address them as part of its Hazard... Read More

California's DTSC will use Wiki as part of its Green Chemistry Program
Posted on 19 Mar 2009 by Thomas H. Clarke, Jr.

Prior posts have described California's Green Chemistry Program. California's Department of Toxic Substances Control has now announced that it will use a "Wiki" to gather public comments regarding the development of regulations necessary... Read More

Fossil of another "transition animal" found
Posted on 27 Jun 2009 by Thomas H. Clarke, Jr.

When discussions about evolution occur, one of the frequent criticisms is that there is often scant evidence showing the transition of an animal from one form to another. Given the rarity of fossils, this is a clever argument, but often lacking in any... Read More

Genome duplication and transposable elements may explain why humans are so different from our closest ancestors, the great apes
Posted on 23 Apr 2009 by Thomas H. Clarke, Jr.

This is the last in a series of four posts about the changing view of the evolution of life on Earth. Today's post looks at a question of interest to all of us. Why are humans different from our close relatives, the great apes? There are two interesting... Read More

So-called safe lead levels have adverse impacts on children, notes new study from University of Bristol
Posted on 19 Sep 2009 by Thomas H. Clarke, Jr.

Researchers from the University of Bristol Centre for Child and Adolescent Health set out to see if there was any effect on the behavior and intellectual development of children who had ingested just below the so-called safe level of 10 micrograms per... Read More

Study finds association between intrauterine exposure to various endocrine disrupting pollutants and higher body mass index in toddlers
Posted on 22 Feb 2009 by Thomas H. Clarke, Jr.

To date, there have been relatively few epidemiologic studies investigating the association between intrauterine exposure to chemicals and body mass index [for an explanation of the BMI, see http://en.wikipedia.org/wiki/Body_mass_index .] However, it... Read More

Smaller terrible lizards? Granaries before cultivation? Knowledge marches on.
Posted on 8 Jul 2009 by Thomas H. Clarke, Jr.

Prior posts have noted the evolving science of evolution and our understanding of the history of both our planet and its various life-forms over time. Two recently published studies add to that body of knowledge that is ever-changing. First, the size... Read More

High fructose corn syrup contains small amounts of mercury, but daily consumption of mercury from HFCS is probably in the range of 28 micrograms
Posted on 9 May 2009 by Thomas H. Clarke, Jr.

Using data and samples that are admittedly several years old, researchers have noted that the chlorine and caustic soda made worldwide is made in chlor-alkali plants using mercury cells or the increasing popular membrane technology that is mercury free... Read More

Attorneys seeking fees pursuant to CCP Section 1021.5 under a "catalyst theory" should make a settlement offer before filing the lawsuit
Posted on 25 Nov 2008 by Thomas H. Clarke, Jr.

Section 1021.5 of the California Code of Civil Procedure is the statutory basis for an award of attorney''s fees when the lawsuit results in a significant public benefit. In evaluating how the public benefit came to be for purposes of Section... Read More

California moves forward with green chemistry program; convenes panel to discuss new ways to remove toxins from consumer products
Posted on 27 Apr 2009 by Thomas H. Clarke, Jr.

California 's so-called Green Chemistry program has been discussed in prior posts (see http://www.dtsc.ca.gov/PollutionPrevention ). One of the program's objectives is to decrease toxins in consumer products in order to reduce the potential for... Read More

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