Picking out your Christmas tree this weekend? This is how to choose one that can boost your health... and help banish festive stress

More from Science & Technology

• Campbell's admission about shocking practice resurfaces after executive fired over sickening soup claims

• Revealed: What makes the perfect Race Across the World partner (and why it probably ISN'T your mum!)

• UN confirms planetary defenses will observe interstellar comet 3I/ATLAS as it races through our solar system

• Scientists have come up with an unusual way to stop the Gulf Stream collapsing and plunging Europe into another Ice Age - and it involves MELTING an ice sheet

• Can YOU remember if Mr Darcy emerges wet-shirted from a lake, or what colour C-3PO is? Take the test to see if you've fallen victim to the Mandela Effect in your favourite films

• Why the 'arm cutting' scene in 127 Hours makes you squirm: Scientists reveal how your brain simulates pain it sees on screen

• Do YOU drink more than your partner? Mismatched alcohol consumption is a 'warning sign' for your marriage, study finds

• Our tech reporter has sourced the top Black Friday Amazon deals on iPads, laptops, headphones and more you don't want to miss

• Spotify users think they've cracked the launch date for Spotify Wrapped - and it suggests there's not long to wait

• Campbell's FIRES executive secretly recorded saying its soups are full of 'bioengineered meat' and made for 'poor people'

• Florida AG launches probe into Campbell's over claims of '3D-printed meat' in beloved soup

• Leaked recording reveals Campbell's exec's sickening remarks about iconic soup's ingredients

• Easter Island mystery is SOLVED: Scientists finally pinpoint who built the iconic stone heads 900 years ago

• Thanksgiving blizzard and arctic blast plunges holiday travel into chaos for millions across US

• Multiple earthquakes rock home of world's biggest tech companies in Silicon Valley

• The ideal body, according to AI: Scientists ask bots what the perfect man and woman look like - so, do you agree?

• Physicist proposes radical new theory of consciousness - and it could finally explain what happens when you die

• The rise of 'polite littering': Brits are strategically placing rubbish on window ledges, bushes, and lamp posts because they can't be bothered to find a bin

• Calorie labels are a SHAM! Eye-tracking study reveals how information on menus only influences people who are already actively trying to lose weight

• Forget Yellowstone or Etna! 'Hidden' volcanoes pose the greatest risk to the world, scientists warn - after little-known mount erupts in Ethiopia