Critics contend the crystals could have been formed by some other mechanism not requiring life, such as chemical action.
Corrosion: wearing away of material especially by chemical action.
They then triggered them into action using a chemical called an interleukin, or cigarette smoke before adding resveratrol.
This problem is compounded by the possible presence of multiple chemicals which together have an additive effect that greatly increases the lethal action of any single chemical.
Further tests showed that DISC1 acts like lithium, a drug commonly prescribed as mood stabiliser to patients with mental illness, inhibiting the action of a key chemical in the brain.
Traditional industries such as steel and chemical makers are opposed to any action because they are afraid it will create a precedent for what they see as interference with free market dynamics that will only add costs to their balance sheets.
With the Chemical Weapons Convention (CWC) awaiting action by the U.S. Senate, the treaty's supporters are asserting that the Tokyo subway poison gas attack demonstrates the need for U.S. ratification.
CENTERFORSECURITYPOLICY: Blowing Smoke About Making Deadly Gas
Taking action to stop the use of chemical weapons is in the interest of everyone on earth, with the possible exception of Syrian President Bashar al-Assad.
Jonathan Vennerstrom, a researcher at the University of Nebraska, has come up with a five-step chemical process to make compounds that can mimic the action of artemisinin derivatives.
Silent Spring elicited a public outcry for direct action followed by a brutal backlash from the chemical industry, often tainted with sexism.
In addition, the theory of homeopathy actually defies conventional scientific understanding--in particular, the law of mass action, which demands that the rates of chemical reactions be proportional to the concentrations of substances involved.
High-profile Democratic lawmakers also called for action to help secure Syria's stockpile of chemical arms and increase aid to the opposition, including the possible imposition of a no-fly zone.
BBC: 'Growing evidence' of chemical weapons use in Syria - UK
In December, he reiterated in a speech at the National Defense University in Washington that any use of chemical weapons by Syria would result in U.S. action.
Washington (CNN) -- All options remain on the table as the Obama administration considers what, if any, military action to take in Syria following the suspected use of chemical weapons there, U.S. officials tell CNN.
While various administration figures, including President Bush, have in recent days warned Syria about harboring senior members of the Iraqi leadership and of developing chemical weapons, Pentagon officials brushed aside questions about any possible military action against Syria.
CNN: Pentagon: 'Major combat' over, but smaller fights remain
America, supported by Britain, argues that weapons inspectors should only return to Iraq provided they are armed with a new resolution threatening military action if faced with any obstruction in their hunt for chemical, biological and nuclear weapons programmes.
It is still uncertain whether a low level of serotonin in those who take Ecstasy is due to the action of the drug, or whether naturally-occurring deficits in the chemical make you more likely to take it.
Lavrov also expressed concerns about chemical weapons' use, but stressed the need for clear facts before any course of action is rashly decided upon.
The world must come together to prevent this by unified action which results in the secure containment of Syria's significant stockpile of chemical weapons.
The Center for Security Policy calls on CMA to refrain from using its deep-pocketed Political Action Committee in ways that could compromise the integrity of the debate on the Chemical Weapons Convention and put key participants in that debate in compromising positions.
"Pursuing legal options is not a decision we take lightly, especially because of the longstanding partnerships we have established in Kuwait over the past decade, but PIC is in breach of contract, and we must take action to protect the interests of our company and our shareholders, " Dow Chemical Chief Executive Andrew Liveris said.
Washington is contemplating military action against Iraq, citing the threat posed by its efforts to develop nuclear, chemical and biological weapons, but administration officials insist no decision has been made.
Cambridgeshire villagers are to take legal action against a company over a smell caused by clean-up work at a former chemical factory site.
Mr Cameron has said he agrees with the White House's warning that chemical weapons use would be a "red line", although he has ruled out sending British troops into action and has spoken instead of support for rebel forces.
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