科学研究   常速英语

Keywords:

In the last few decades, astronomers have discovered thousands of new worlds: exoplanets of all shapes and sizes, orbiting distant stars. But it seems that there was an undiscovered planet hidden...

Keywords:

The millions of bases, which make up the human genome, are organized into structures called chromosomes. These are arranged into 22 matching pairs, plus one pair of sex chromosomes, con...

Keywords:

In the early 1930s there was a territorial dispute between Denmark and Norway over who should have the right to East Greenland. Both Denmark and Norway, they made a lot of aerial mapping. They t...

Keywords:

As represented by this huge stack of paper, the human genome contains more than 3 billion nucleotides or DNA letters. The first stage of the public human genome project focused on ident...

Keywords:

What is the true nature of the universe? To answer this question, humans come up with stories to describe the world. We test our stories and learn what to keep and what to throw away. But the more...

Keywords:

Just as explorers have always sought to map new worlds, neuroscientists have sought to map the brain, trying to chronicle its connections and deduce how it works. But making a brain map is easier...

Keywords:

In this animation, we'll see the remarkable way our DNA is tightly packed up to fit into the nucleus of every cell. The process starts with assembly of a nucleosome, which is formed wh...

Keywords:

This 9-millimetre-wide fragment of tiny molar was the first evidence of an ancient, equally tiny, human. It was found in a recent archaeological dig on an island in Indonesia, and sheds new light ...