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Entries from December 2019


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"The people I distrust most are those who want to improve our lives but have only one course of action."

Physics

Why do astronauts wear space suits?»
Space suits act like a suit of armour. They stop an astronaut’s blood boiling in space, and ...
Who first set foot on the Moon?»
The very first person to step on to the Moon was the American Neil Armstrong, in 1969. He ...
Who was the first man in space?»
A young Russian pilot called Yuri Gagarin was the first person in space. He orbited the ...
Who made the first rockets?»
The Chinese made the first ‘rockets’ about 1,000 years ago, but they were more like ...
Why do we need rockets?»
Rockets are important for space travel. They are the only machines powerful enough to ...

Chemistry

What are acids and bases?»
ACIDS AND BASES Some substances and chemicals are very reactive. This means they ...
What are crystals and what are Solutions?»
CRYSTALS In many solid substances, the atoms or molecules are fixed in place but ...
What is oxygen and hydrogen?»
OXYGEN We cannot see, smell or taste oxygen. Yet it forms one-fifth of air and is ...
How would you help me to understand what molecule is?»
MOLECULES Atoms make up all the objects and substances in our world. But they ...
Why some metals are precious?»
PRECIOUS METALS Certain types of metals are precious or valuable. This may be ...

Biology

Should people keep primates in zoos?»
Primates are happiest in the wild, but zoos do important work. They breed animals that are ...
Which ape uses tools?»
Chimps are very clever, and even make simple tools. They sometimes strip a stick of its ...
Who’s the king of the swingers? »
Gibbons are the champion swingers. They have special bones in their wrists and shoulders to ...
Which is the noisiest primate?»
The howler monkey is well-named, because it makes a terrific noise that can be heard up ...
How do lemur babies get around?»
Like all primates, newborn lemur babies cling to their mum’s tum as she moves about the ...