Age no impediment to hot sex

Scientists in the US and Australia have shown that age is not a barrier to hot sex, at least when it comes to one of the world's oldest species of tree. Reporting their findings in the journal Science, University of Utah researcher Irene Terry, together with Gimme Walter, Chris Moore and Craig Hull from the University of Queensland, have solved a long standing puzzle about the reproduction of cycads, primitive plants dubbed "living fossils" that date back almost 300 million years.

Plastic Bottles Release Faster Sex Disrupting Chemical in Contact With Hot Liquids!

Bisphenol A (BPA) was investigated in the 1930s during the search for synthetic estrogens. Diethylstilbestrol proved more powerful than estrogen, so bisphenol A was not used as a synthetic estrogen.

Currently, it is a primary monomer in polycarbonate plastic and epoxy resins. Bisphenol A is also employed as an antioxidant in plasticizers and as an inhibitor for polymerization in PVC. These plastics are a common constituent of many products, from sunglasses and CDs to water and food containers and shatter-resistant baby bottles.

Some polymers employed in dental fillings also contain bisphenol A, while epoxy is a common coating for the inside of cans in food industry. BPA leaks from plastics get cleaned with harsh detergents containing acidic components or at high temperatures, and now most people in developed countries present this chemical at very low concentrations. The chemical has been linked by some researches to sterility in women.

Chemistry of Autumn Leaf Color

How Fall Colors Work

Leaf Colors

The color of a leaf results from an interaction of different pigments produced by the plant. The main pigment classes responsible for leaf color are porphyrins, carotenoids, and flavonoids. The color that we perceive depends on the amount and types of the pigments that are present. Chemical interactions within the plant, particularly in response to acidity (pH) also affect the leaf color.

Chemicals Lubricants Paints

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Hand & Tool Towels

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Chemicals That Fuel Your Sex Life

There are a host of sexual chemicals that affect your mind and body during and after sex. Check 'em out.
Prolactin;
What it does:Prolactin relieves sexual arousal after orgasm and takes your mind off sex. It rises sharply immediately after orgasm in almost everyone. It's one of the few moments of the day when we men aren't preoccupied with sex.
How it makes you feel:
Prolactin disengages you from sex after an orgasm, allowing you to think of other things besides the naked woman right in front of you. If after sex your mind is flooded with activities and chores you need to accomplish that day, that is prolactin at work. Just imagine how much more progress we could all make in our lives if they pumped this stuff into the water supply.
Oxytocin
What it does
Secreted by the pituitary gland, oxytocin stimulates the prostate, causes muscle contractions and sensitizes nerves. Research has shown that increased oxytocin produces more intense orgasms.

History of anesthesia

History of anesthesia
Methods for lessening the sensation of pain during surgery date back to ancient times. Read more: Anesthesia - body, used, chemical, methods, gas, cells, effects, cause, change, History of anesthesia, Emergence of anesthesiology, Types of anesthesia http://www.scienceclarified.com/Al-
Emergence of anesthesiology
Anesthesiology was slow to develop as a medical specialty. By the end of the nineteenth century, ether—which was considered safer than chloroform—was administered by persons with little medical experience. Nurses were eventually assigned to this task, becoming the first anesthetists at the turn of the century.Read more:
Types of anesthesia
Modern anesthesia uses both chemical agents and nondrug methods as preparation for medical procedures. Chemical agents are drugs that can be administered by mouth, by injection into muscle or under the skin with a needle, intravenously (by needle into a vein), or with a gas mask for inhalationRead more: