SCIENCE

• It’s a wonderful world — and universe — out there.
• Come explore with us!
• Topics covered


  • Earth
  • Environment
  • Climate
  • Oceans
  • Agriculture
  • Humans
  • Health & Medicine
  • Psychology
  • Archaeology
  • Life
  • Animals
  • Brain
  • Plants
  • Fossils
  • Ecosystems
  • Microbes
  • Genetics
  • Physics
  • Materials Science
  • Space
  • Planets
  • Tech
  • Computing
  • Artificial Intelligence
  • Chemistry
  • Math
  • Science & Society
• Just how brainy was a T. rex?

  July 25, 2024
• This squid-like ‘fairy lantern’ plant is new to science

  July 23, 2024
• Scientists Say: Beakiation


  July 22, 2024
• Space tourists could face out-of-this-world health risks


  July 22, 2024
• Forget moon walking, lunar visitors. Try horizontal running


  July 11, 2024
• Hawaii’s Kilauea volcano recently erupted like a stomp rocket


  July 24, 2024
• Microbes in the Arctic may be releasing more climate-warming gases


  July 10, 2024
• Analyze This: Where are U.S. earthquakes most likely?


  July 3, 2024
• Active volcanoes may be common on Venus


  July 17, 2024
• Laser-based tech can identify illegal elephant ivory

  July 16, 2024
• Where are the flying cars?

  July 15, 2024
• Scientists Say: Superconductor


  July 15, 2024
• Scientists understand much about Earth’s structural layers — the inner core, core, mantle and crust.
• Earth is composed of four distinct layers.
• Earth's layers


  • Inner core
  • Outer core
  • Mantle
  • Crust
• The inner core is a solid metal ball with a radius of 1,220 kilometers (758 miles).
• The inner core is located some 6,400 to 5,180 kilometers (4,000 to 3,220 miles) beneath Earth’s surface.
• The inner core is made mostly of iron and nickel.
• The inner core spins a bit faster than the rest of the planet.
• The inner core's temperatures sizzle at 5,400° Celsius (9,800° Fahrenheit).
• Pressures in the inner core are well over 3 million times greater than on Earth’s surface.
• The outer core is made from iron and nickel in liquid form.