References
Latest References

Tiwanaku: A little-known pre-Incan civilization that built temples and cities high in the Andes
By Owen Jarus, Laura Geggel last updated
This ancient city in modern-day Bolivia is almost 13,000 feet above sea level. Only a small portion of the ruins have been excavated.

Best laptops for coding & programming 2025: Powerful portable computers
By Mike Jennings last updated
Find one of the best laptops for coding and programming so you can work on the go with ultimate power in a portable package.

Echidnas: Facts about spiky Australian mammals that lay eggs
By Marilyn Perkins, Alina Bradford last updated
Discover interesting facts about echidnas, the strange platypus relative with spines, spurs and a pouch.

Best electric toothbrushes for kids 2025
By Joanne Lewsley last updated
Buying Guide These are the best electric toothbrushes for kids, from Oral B Kids and Philips Sonicare for Kids to AutoBrush Sonic Pro.

Best workout equipment for home gyms 2025: Exercise in the comfort of your home
By Sam Hopes last updated
Buying Guide Set up your home gym with the best workout equipment for home.

Best running shoes for supination 2025: Find the perfect fit for your feet
By Harry Bullmore last updated
Buyers guide These are the best running shoes you can buy in every category, from New Balance 1080 v14 and Brooks Glycerin 20 to Hoka Mach X.

The human heart: Facts about the body's hardest-working muscle
By Mindy Weisberger last updated
Discover interesting facts about the fist-size organ that powers the circulatory system.

Best laptops for photo editing 2025: Powerful and affordable devices for designers and photographers
By Keumars Afifi-Sabet last updated
Buying Guide We've ranked the best photo editing laptops, from MacBooks to gaming notebooks

The San Andreas Fault: Facts about the crack in California's crust that could unleash the 'Big One'
By Stephanie Pappas published
California's San Andreas Fault is capable of triggering a massive earthquake. Here's what to know about this famous location often associated with earthquakes.
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