2024年10月2日 · Flu shots work by priming the immune system to make antibodies that are ready to attack the selected flu strains if a vaccinated person is exposed.. Scientists reported early …

2023年10月9日 · During the last ice age, humans ventured into two vast and completely unknown continents: North and South America. For nearly a century, researchers thought they knew …

2024年11月21日 · Eighty-six years later, Heinrich Hertz became the first to demonstrate the particle nature of light. He noticed that when ultraviolet light shone on a metal surface, it …

2024年11月1日 · In theory, quantum computers could solve problems that are beyond even the most powerful classical computer. However, there’s broad consensus that such devices will …

2023年2月20日 · Telomeres are the "caps" that protect the ends of DNA strands from being destroyed by a cell. They are made up of areas of repeated DNA sequences combined with …

2024年5月29日 · The daytime moon is visible almost every day of the month, except those closest to the full moon and the new moon. Here's why the moon and sun often share the daytime sky.

2022年12月28日 · Seasonal affective disorder. SAD is a type of depression that occurs when the days get shorter in winter. According to the National Institute of Mental Health (NIMH), …

2024年1月13日 · An illustration of what Nuna looked like 1.45 billion years ago. (Image credit: Meert and Santosh/Gondwana Research) The first supercontinent, called Columbia, or Nuna, …

2023年10月28日 · The ultimate action-packed science and technology magazine bursting with exciting information about the universe; Subscribe today and save an extra 5% with checkout …

2024年1月3日 · Our brain needs this huge oxygen supply to maintain its delicate balance of electrolytes, minerals that carry an electric charge and are key for conducting electrical …