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Your search for "research and development" returned 3,178 results
Aromatherapy: Eucalyptus
health.howstuffworks.com/wellness/natural-medicine/aromatherapy/aromatherapy-eucalyptus.htm
Eucalyptus can be used in aromatherapy preparations to fight mental fatigue or to infections when applied to the skin. Learn about this essential oil.
What Are the 17 Symptoms of PTSD?
science.howstuffworks.com/ptsd.htm
Post-traumatic stress disorder was first described by a doctor treating patients during the Civil War. Learn about post-traumatic stress disorder.
How Do Geiger Counters Work?
science.howstuffworks.com/geiger-counter.htm
First developed in the 1920s, Geiger counters still use the same basic technology to detect radiation, but today can be the size of a smartphone.
How Thin-film Solar Cells Work
science.howstuffworks.com/environmental/green-science/thin-film-solar-cell.htm
Thin-film solar cells are more flexible and less expensive than traditional solar cells. Learn more about what makes thin-film solar cells different.
How to Volunteer in a Clinical Trial
money.howstuffworks.com/economics/volunteer/opportunities/volunteer-in-clinical-trial.htm
Volunteering for a clinical trial is a big decision. Get all the information you need in this article before you decide to volunteer in a clinical trial.
Can Genealogy Sites Use Your DNA However They Want?
people.howstuffworks.com/culture-traditions/genealogy/can-genealogy-sites-use-dna-however-want.htm
Critics worry that when you send your DNA to Ancestry.com for personal analysis it can be used for other purposes. HowStuffWorks checks out whether these fears are warranted.
Study Says 2035 Is Climate Change Point of No Return
After 2035 it will be extremely unlikely we can stop Earth's temperature from rising enough to kick off a dangerous medley of global disasters.
Does sucking your thumb really ruin your teeth?
health.howstuffworks.com/mental-health/human-nature/health-myths/sucking-thumb-teeth.htm
Is it true that sucking a thumb ruins a child's teeth? Read this article to know when to worry about thumb sucking and the development of teeth.
The History of Roller Skating
entertainment.howstuffworks.com/history-roller-skating.htm
The history of roller skating is a winding road that started with John Joseph Merlin in the 18th century and evolved into multiple sports we still play today.
Did the Mayan civilization end because of climate change?
science.howstuffworks.com/environmental/green-science/climate-change-end-mayan-civilization.htm
Over the years, many theories have been advanced about why the once-mighty Mayan civilization fell. But a newer one is getting attention: Was it because of climate change?