You have two nostrils, but usually one is dominant.
California firefighters have wrapped the bases of the world's largest trees in fire-resistant aluminum blankets to protect them from a wildfire that is raging nearby.
Hours of survey work have added an additional 8 miles to the passageways at Mammoth Cave National Park in Kentucky
Over 100,000 years ago, extinct relatives of modern elephants lived in matriarchal groups, according to preserved trackways in southwestern Spain.
Researchers are set to break the world record for the most precise value of pi, after using an advanced computer to calculate the famous constant to 62.8 trillion decimal places.
Also known as "the sixth sense" or "psi," extrasensory perception, or ESP, encompasses a wide range of paranormal abilities, including mind reading and predicting the future.