Caffeine By Rachael Rettner published 7 February 18 Caffeine is perhaps the world's most popular mood-altering drug, found commonly in coffee and tea.
Autism By Rachael Rettner published 7 February 18 Autism is a developmental disorder that affects a person's ability to communicate and interact with others.
Cretaceous Period By Laura Geggel published 7 February 18 The Cretaceous, the last and longest period of the dinosaur age, lasted from about 145.5 million to about 65.5 million years ago.
Vikings By Laura Geggel published 7 February 18 During the Viking Age, which lasted from about A.D. 800 to 1066, Scandinavian seafarers raided foreign lands, began new settlements and traded goods such as furs, reindeer antlers and seal fat.
Photosynthesis By Laura Geggel published 7 February 18 Photosynthesis allows plants, algae and certain bacteria to turn sunlight into chemical energy.
Deforestation By Laura Geggel published 7 February 18 Deforestation happens when forests are permanently destroyed.
Lymphatic System By Rachael Rettner published 7 February 18 The lymphatic system helps to defend the body against infections.
Ancient Egypt By Laura Geggel published 7 February 18 Ancient Egypt is famous for its pyramids, pharaohs and mummies, but archaeologists are still learning about this sophisticated society.
Mummies By Laura Geggel published 7 February 18 Mummies provide a window into the traditions and rituals practiced by ancient cultures.
Elements By Jeanna Bryner published 1 February 18 Here are all the latest discoveries and developments to help you keep up with the fascinating world of chemical elements.
Personality By Sara G. Miller published 1 February 18 Personality — it's what makes you, you. But what traits make up a person's personality? Can personality be changed? To keep up with research on personality, check here for the latest news.
Immune System By Sara G. Miller published 1 February 18 When it comes down to it, it's your immune system versus the world.
Nervous System By Sara G. Miller published 1 February 18 If you're reading this, your nervous system is online.
Anxiety By Sara G. Miller published 1 February 18 Here's the latest news on the science of anxiety, who it impacts and possible treatments.
Opioids By Sara G. Miller published 1 February 18 Here's the latest news on the science of opioids, who they impact and possible treatments.
Carbohydrates By Sara G. Miller published 1 February 18 Carbohydrates — love 'em or hate 'em, you can't live without them.
Aliens By Jeanna Bryner published 1 February 18 Aliens can refer to everything from little green men in the sci-fi realm to microscopic life forms beyond Earth. For all these possibilities, Live Science has you covered.
Plate Tectonics By Jeanna Bryner published 1 February 18 Here's a look at Live Science's news and features related to this constantly moving jigsaw puzzle.
Dead Sea Scrolls By Jeanna Bryner published 1 February 18 Live Science brings you all the latest news about newfound scrolls, decoded fragments and all the mystery surrounding the discoveries.
