Browse News Stories 1 to 10 of 34,675 stories Fewer Children Mean Longer Life? March 27, 2013 — New research into aging processes, based on modern genetic techniques, confirms theoretical expectations about the correlation between reproduction and lifespan. Studies of birds reveal that those ... > full story New DNA Test Identifies Ingredients in Foods March 27, 2013 — Almost all foodstuffs contain the genetic material of those animal and plant species that were used in their preparation. Scientists have developed a novel screening procedure that provides for ... > full story
First thing you need to know: Before doing anything else, you should simply click “play” and start watching the video above. It doesn’t take long for Robert Sapolsky , one of Stanford’s finest teachers, to pull you right into his course. Better to watch him than listen to me. Second thing to know: Sapolsky is a MacArthur Fellow, a world renowned neurobiologist, and an adept science writer best known for his book, Why Zebras Don’t Get Ulcers . Much of his research focuses on the interplay between the mind and body (how biology affects the mind, and the mind, the body), and that relationship lies at the heart of this course called “Human Behavioral Biology.” Now the third: Human Behavioral Biology is available on YouTube and iTunes for free.
When the evenings get particularly thick with mosquitoes where I live, I sometimes sit out in the yard with my daughters and look up at the fading sky. Before too long, a single bat will usually flit out of the nearby trees and start flying circles around the house, scooping up bugs along the way.
This site brings together many links on bacteria, bacteriology, and related topics available on the web. It also provides crystal-clear information about many aspects of bacteria. If you're unfamiliar with the subject, here's a start: Bacteria are living things that are neither plants nor animals, but belong to a group all by themselves. They are very small-individually not more than one single cellhowever there are normally millions of them together, for they can multiply really fast. We provide many links to pictures, video's, and explanatory text.
Bioluminescence, which means "living light," occurs in fireflies , certain fungi and fish, and microorganisms like dinoflagellates, a species of algae .  Dinoflagellates in marine environments can multiply rapidly with the right combination of sunlight and nutrients, and when the water around them is agitated their distinctive blue or green glow becomes visible. Since a natural dinoflagellate "bloom" occurs only rarely, try growing them at home to experience the beauty of bioluminescence. Gather a few materials, set up the appropriate light and temperature conditions, and wait for nighttime to watch the algae sparkle and glow. <p style="text-align:right;color:#A8A8A8"></p>
American botanist Lou Jost, one of the world's leading orchid hunters, is responsible for discovering 60 new species of orchid in the last decade alone. But it's his latest discovery that might be the most unique and unusual. "I found it among the roots of another plant that I had collected, another small orchid which I took back to grow in my greenhouse to get it to flower," he said of his latest discovery. "A few months later I saw that down among the roots was a tiny little plant that I realized was more interesting than the bigger orchid." As reported by The Independent , the minuscule new orchid is just 2.1 mm wide, and instantly supersedes the species Platystele jungermannioides as the world's smallest. In fact, the petals are so thin that they are just one cell thick and transparent.
As far as the backyard garden at casa de radmegan goes, most of my vegetables have ceased production for the season. The pitchers on my carnivorous plants are browning. My sweet little alien-like conophytums and lithops were covered up last week to protect against too much rain. On the whole, my garden has closed up shop for the winter.
1. Most likely to eat a rat Giant Pitcher Plant: Nepenthes attenboroughii
In the late '80s, NASA and the Associated Landscape Contractors of America studied houseplants as a way to purify the air in space facilities. They found several plants that filter out common volatile organic compounds (VOCs). Lucky for us the plants can also help clean indoor air on Earth, which is typically far more polluted than outdoor air.
What is pleasing to the eyes are conceived to be enticing to eat.
GENERAL INTEREST STUDENTS General Interest students may register for any designated general interest courses as long as they have taken the appropriate prerequisites (when required). General Interest students are not required to enroll in a certificate or diploma program. They are also not required to complete assignments or write exams for any course. However, it is highly recommended that they do so as it will enhance their learning experience. General Interest students who choose not to write exams or complete assignments for any course will be considered to have fulfilled the requirements of that course for the purposes of meeting prerequisite requirements for additional courses.
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Eggs, yogurt and honey are, at first glance, all components of a tasty breakfast — but they also happen to be hair treatment ingredients, and affordable, all-natural ones at that. And they're not the only ones. Did you know, for instance, that the oils in avocados more closely resemble our own skin's oils than any product in the beauty aisle does? Or that the mild acidity in lemon is an effective — and gentler — alternative to chemical-laden products? Next time your locks need a lift, save money by using one of these kitchen fixes. For all hair types
In biology , and specifically genetics , epigenetics is the study of changes in gene expression or cellular phenotype , caused by mechanisms other than changes in the underlying DNA sequence – hence the name epi- (Greek: επί - over, above, outer) - genetics , some of which are heritable . It refers to functionally relevant modifications to the genome that do not involve a change in the nucleotide sequence. Examples of such modifications are DNA methylation and histone modification , both of which serve to regulate gene expression without altering the underlying DNA sequence . These changes may remain through cell divisions for the remainder of the cell's life and may also last for multiple generations.