In the first of 3 episodes we take a look at how the telescope was invented, from Galileo to Edwin Hubble, and how the invention reaches the universe 13 billion light-years out. Narrated by Patrick Stewart.
The media have been talking about “genetically modified humans” and “designer babies.” But what they’re really talking about is germ-line engineering: a process that could help eliminate heritable diseases. So why do some scientists want to pause the research?
We have a relationship with few things in nature the way we do with snow: we hate it, we love it, and we think we understand it. But we barely know the contradictory and beautiful components of snow’s character. But that’s something scientists are changing. From the formation of single flakes to the howling 70 km/h winds of lake effect snow storms to the destructive power of avalanches, intrepid researchers are bringing snow science into the 21st Century.
Just 92 elements made up the world, but the belief that were only four - earth, fire, air and water - persisted until the 19th Century. Professor Al-Khalili retraces the footsteps of the alchemists who first began to question the notion of the elements in their search for the secret of everlasting life. He reveals the red herrings and rivalries which dogged scientific progress, and explores how new approaches to splitting matter brought us both remarkable elements and the new science of chemistry.