References
22 February 2014, 03:46 AM ET
The Devonian Period occurred from 416 million to 358 million years ago. It is often known as the “Age of Fishes."
22 February 2014, 03:42 AM ET
As the name implies, procedural memory stores information on how to perform certain procedures, such as walking, talking and riding a bike, without having to consciously think about them.
21 February 2014, 10:08 AM ET
Selenium supplements are taken by people who want to prevent cancer, heart disease, memory loss and diabetes. But does taking selenium work? Here's a look at what the science says.
21 February 2014, 03:12 AM ET
These simple plant science experiments will sharpen your little ones’ interest in seeds and plants.
21 February 2014, 03:05 AM ET
The black mamba is one of the fastest and deadliest snakes in the world. Two drops of its venom can kill a person.
21 February 2014, 02:55 AM ET
Lithium medications are used to treat symptoms of bipolar disorder, by possibly preventing episodes of mania.
21 February 2014, 02:41 AM ET
Bariatric surgery is an operation on the stomach and intestine used to treat obesity.
20 February 2014, 12:42 AM ET
Risperdal (generic name risperidone) is an antipsychotic drug prescribed to treat schizophrenia, bipolar disorder and some behavioral problems in children with autism.
20 February 2014, 12:30 AM ET
Cobras are large, venomous snakes with a trademark hood. They hiss and spit and can raise the upper part of their bodies high enough to look you in the eye.
20 February 2014, 12:26 AM ET
Some people in Taos, New Mexico, say they hear an unusual droning sound, or buzzing, or as it has come to be called, the "Taos Hum." Pinpointing its source has not been easy.
19 February 2014, 09:52 PM ET
The Silurian Period occurred from 443 million to 416 million years ago. It was a time of great environmental changes on Earth and saw the first evidence of life on land.
19 February 2014, 01:28 AM ET
The Common Core State Standards Initiative is an effort to prepare every student for college or the workforce.
19 February 2014, 01:24 AM ET
Diabetes is a metabolic disease marked by high blood glucose, also known as blood sugar.
15 February 2014, 12:25 AM ET
Many notable figures — not only Thomas Edison — contributed to the development of this revolutionary technology.
14 February 2014, 10:05 PM ET
Poison ivy is a toxic plant that causes an itchy and sometimes painful rash in most people when they touch it.
12 February 2014, 07:48 PM ET
The Precambrian was the first super eon of Earth’s history, lasting from about 4.6 billion to 542 million years ago.
12 February 2014, 07:42 PM ET
Implicit memory uses past experiences to remember things without thinking about them, like how to ride a bike or button a shirt.
11 February 2014, 05:16 PM ET
STEM is a curriculum based on the idea of educating students in four specific disciplines — science, technology, engineering and mathematics — in an interdisciplinary and applied approach.
11 February 2014, 05:08 PM ET
The Triassic Period occurred between 251 million and 199 million years ago. It was a time when life outside of the oceans began to diversify.
10 February 2014, 07:05 PM ET
Genghis Khan and his successors conquered vast territories, from China to eastern Europe.
07 February 2014, 07:27 PM ET
A subduction zone is a collision between two of Earth's tectonic plates, where one plate sinks into the mantle underneath the other plate.
07 February 2014, 07:16 PM ET
The Permian Period lasted from 299 million to 251 million years ago. Two groups of animals that dominated the period would later branch into mammals and reptiles.
07 February 2014, 06:59 PM ET
Spinal stenosis is a narrowing of the spinal canal, the opening created by the small hole found in each of the vertebrae that make up the human spinal column.
05 February 2014, 11:21 PM ET
Declarative memory, or explicit memory, consists of facts and events that can be explicitly stored and consciously recalled or "declared."
05 February 2014, 11:06 PM ET
Lower back pain is one of the most common complaints and can have multiple causes.
05 February 2014, 11:02 PM ET
The Quaternary Period is a geologic time period that encompasses the most recent 2.6 million years — including the present day.
04 February 2014, 05:07 PM ET
Carl Jung's concept of synchronicity can be boiled down to describing "meaningful coincidences."
31 January 2014, 11:44 PM ET
The Ishtar Gate was one of eight gateways that provided entry to the inner city of Babylon.
31 January 2014, 12:37 AM ET
Louis Pasteur was a French chemist who proved that germs cause disease, developed vaccines for anthrax and rabies and created the process of pasteurization.
31 January 2014, 12:32 AM ET
Appendicitis is inflammation of the appendix. It is a serious illness and can be life threatening if not treated in time.
30 January 2014, 09:28 AM ET
Magnesium supplements are touted as helping people with many different health conditions, however, does the science support these claims?
30 January 2014, 12:44 AM ET
Complex numbers are numbers that consist of two parts — a real number and an imaginary number.