As the Earth’s surface temperature gradually rises, it has become vital for us to predict the rate of this increase with as much precision as possible. In order to do that, scientists need to understand more about aerosols and clouds. Jasper Kirkby details an experiment at CERN that aims to do just that. Lesson by Jasper Kirkby, animation by Cedric Richer.
The second TEDxCERN event, to be held 24 September 2014 at CERN, has the theme 'Forward: charting the future with science'.
We only know 4% of what the universe is made up of. Can we also know what lies beyond our galaxy ... and if there are undiscovered forms of matter? Luckily, we have space messengers — cosmic rays — that bring us physical data from parts of the cosmos beyond our reach. Veronica Bindi explains what cosmic rays are, and how they transmit information about our universe from the great beyond.
Like positive and negative, or debit and credit, matter and antimatter are equal and opposite. So if matter falls down, does antimatter fall up? Chloé Malbrunot investigates that question by placing two atoms — one made of matter, and the other antimatter — in the cockpit of a plane, ready to jump. What do you think will happen?
The topic of climate science has become highly politicized as scientists and the public – the media, politicians, supporters, and sceptics – differ on the idea of uncertainty. Tamsin Edwards explains that “uncertainty” - rather than being a liability - is the engine of science. She discusses the confusion surrounding climate change and offers a platform for the public to talk directly to climate scientists.
An invisible problem in our society is that we underestimate ourselves. John Mighton, the founder of JUMP Math, believes that anyone can learn anything, especially mathematics. We need to give our teachers the right methods, backed by rigorous evidence, to educate our children.
Patients in remote areas cannot always travel to urban centres for medical examinations. When he was 24, Arthur Zang invented the Cardiopad, a touch screen tablet that enables electrocardiograms (ECG) to be performed in remote, rural areas. The cardiac signals are transferred through the cell phone network and diagnosed by specialists, who receive the results in less than 30 minutes.
For centuries, humans have had to make assumptions about the composition of the universe. But recently, cosmologists have made observations and discoveries that allow us to understand the real history of the universe over the past 12 billion years! Julien Lesgourges explains how and why it is a privilege to be part of this generation.
Why do we limit ourselves to the labels that are imposed on us? Andrew Nemr analyses the power of labels and the impact they have on us - all while tap dancing.
Sonia Trigueros designs novel nanostructures capable of delivering drugs directly to a targeted area of the human body. This revolutionary technology may be able to treat everything from antibiotic resistant bacteria to cancer.
Imagine being able to hold all the material it took to build an airplane in the palm of your hand. Julia Greer combines different design structures at varying nano-scales to create super strong and super light materials. Her research is changing the landscape of materials available today.