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Science + Tech – Articles, Analysis, Comment

Displaying 2501 - 2525 of 6511 articles

How many times have you heard “get out of the way!” when someone is trying to change the channel? Willemvdk/flickr

Curious Kids: How do remote controls work?

Even the Voyager spacecraft are controlled remotely, 20 billion kilometres away. It takes 20 hours for instructions to travel from Earth to the spacecraft but we can do it – using a remote.
Chemical weapons in civilian attacks;: Novichok decontamination work in the area where Sergei and Yulia Skripal were found poisoned and unconscious in Salisbury, UK. Shutterstock/Amani A

It’s the right time to review the world’s chemical weapons convention

The use of chemical weapons has shifted from the battlefield to attacks on civilian targets. Time to rethink the convention that prohibits their use.
An artist’s impression of the surface of the planet orbiting Barnard’s Star. ESO - M. Kornmesser

A super-Earth found in our stellar back yard

The new planet is believed to be orbiting Barnard’s Star, a red dwarf that’s not visible to the naked eye but one of the closest stars to our Solar System.
Museum collections are repositories of specimens and data, including specimens, tissue samples and vocal recordings. from Wikimedia Commons

Taxonomy, the science of naming things, is under threat

Taxonomists are becoming as rare as some of the species they work on, and this puts museum collections and conservation efforts under threat and increases the risk of biosecurity incursions.
Every magnet has two sides: a north pole and a south pole. Helena/flickr

Curious Kids: How and why do magnets stick together?

The energy needed to pull magnets apart comes from you, and you get it from the food you eat. And the plants or animals you eat get their energy from other plants and animals, or from the Sun. All energy comes from somewhere.
Sometimes statistical analysis suggests a result is significant – but actually in real life it means very little. Marlon Lara/Unsplash

What it means when scientists say their results are ‘significant’

What do stats really mean in the real world? Here’s an example from leukaemia research to help you identify if a result really is important.