Mystery of Egypt's Giza pyramids deepens as hidden megastructure 4,000 feet below is revealed

More from Science & Technology

• Out-of-control Chinese rocket smashes into the South Pacific Ocean - after Britain was put on red-alert over the potential of falling debris

• Revealed: The WORST food pairings for nutrient absorption - and it's bad news if you enjoy a coffee with your breakfast cereal

• Why night owls and early birds are a very mixed bunch - which one are YOU?

• From flat faces to stubby legs: The 10 extreme body conformations owners should AVOID in dogs, according to welfare experts

• Are YOU storing your sauces wrong? The correct spot for every single condiment, revealed - as experts finally settle the debate on where ketchup belongs

• Long-lost Egyptian scroll fuels debate over real-life biblical giants

• Bermuda Triangle mystery deepens as new theory suggests strange forces once lurked beneath the sea

• Social media users are amazed to discover a secret message on the paper emoji - and there's a heartfelt meaning behind it

• What happens if NASA's moon mission goes wrong? The 5 worst-case scenarios for Artemis II, revealed - from a fireball on the launchpad to a medical crisis 250,000 miles away from Earth

• Earthquakes rattle California city after weeks of silence as seismic disaster looms

• Biohacker Bryan Johnson slams popular supplements brand as nothing more than 'influencer heist' and waste of money

• Urgent warning to Gmail users as scammers exploit Google's latest email update: Delete NOW

• America's 'white gold' rush kicks off as $2.3 trillion worth of lithium is discovered

• First 'Havana Syndrome' victim dies after mysterious weapon exposure

• Move aside, Moo Deng! Adorable baby pygmy slow loris is the latest internet sensation - as one enamoured fan jokes it's 'basically 50% eyeballs'

• Is THIS where aliens are hiding? NASA discovers an exoplanet 146 light-years away that's 'remarkably similar to Earth' - and it could be habitable

• Cheetos and Doritos have given your favorite chips a dye-free makeover... and the results are harrowing

• Life-threatening winter storm with Category 2 Hurricane-force winds to slam East Coast: 'Be prepared'

• Britain prepares emergency alert amid fears over out-of-control Chinese rocket plummeting to Earth

• Revealed: The classic office words and phrases that Gen Z no longer understand - so, do you know your 'synergy' from your 'paradigm'?