Smithsonian Channel is celebrating Earth Day this year with a special 20% discount on its Smithsonian Channel Plus Streaming Service for new subscribers. To take advantage of this limited-time offer, simply sign up at Smithsonian's website by clicking 'Start Free Trial' and enter promo code EARTH20 during checkout. That'll bring its monthly price down to $3.99 from $4.99, and that offer will remain valid for as long as you stay a member. Your subscription starts with a free 7-day trial allowing you to check out the service and cancel your membership before it ever charges you if you decide it's not a good fit for your home.

Binge-worthy Bargain

Smithsonian Channel Plus Streaming Service

The Smithsonian Channel Plus streaming service offers a bevy of HD and 4K UHD content that explores some of the most awe-inspiring locations on the planet, as well as defining moments in history and more. Make sure to use code EARTH20 to score this monthly discount indefinitely.

$3.99/month $4.99/month $1 off

The Smithsonian Channel Plus streaming service offers tons of informative and insightful content that's as interesting as it is educational. From documentaries like America's Secret D-Day Disaster and Building Star Trek to series like David Attenborough's Great Barrier Reef and Secrets of the Rainforest, the content is vast and there are even offerings in 4K UHD. Unlike on Netflix and other services, there's no additional fee to watch 4K content.

There are plenty of ways to watch too, from Roku devices to the Apple TV 4K and more. It's available as an app for your smartphone too.

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