Electronics
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Best electric toothbrushes for kids 2024
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.
Air purifiers vs ionizers: What's the difference?
By Kerry Taylor-Smith last updated
REFERENCE We pit air purifiers against ionizers to get to the bottom of what each appliance really does.
How well do air purifiers work?
By Helen Alexander last updated
Reference Air purifiers are intended to remove pollutants from the air, but how well do they really work?
Best electric toothbrushes 2024 for clean teeth and gums
By Joanne Lewsley last updated
Buying Guide These are the best electric toothbrushes you can buy in every category, from Oral-B Genius X and Bitvae R2 to Waterpik Complete Care 9.0.
Best air purifiers 2024: Remove pet hair, smoke, dust and more
By Lou Mudge, Anna Gora last updated
BUYING GUIDE These are the best air purifiers you can buy in every category, from Levoit Core 600S and BlueAir Blue Pure 411i Max to Dyson Purifier Cool.
Best astrophotography cameras 2024: Capture the cosmos
By James Artaius last updated
BUYING GUIDE The best astrophotography cameras require excellent low-light capabilities — check out our favorite models to watch for during Amazon Prime Day.
Specialist 'carbon nanotube' AI chip built by Chinese scientists is 1st of its kind and highly energy-efficient
By Owen Hughes published
Scientists in China have developed a tensor processing unit (TPU) that uses carbon-based transistors instead of silicon – and they say it's extremely energy efficient.
New invention harvests ambient Wi-Fi and Bluetooth signals to power small devices
By Rory Bathgate published
Wasted radio signals can be converted into electricity using a new kind of antenna rooted in how electrons behave at a quantum level.
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