What's the science behind itching and scratching?

Are there technologies to remove smoke taint in wine affected by recent wildfires? What's the science behind itching? Can a tortoise survive 10 years locked up in a building? Why might an elderly dog or cat's behaviour change? Does microwaving damage food or reduce vitamin content? Can my blood pressure be affected by a jellyfish sting? Can we harvest energy from space? And is there a cure for…