Channels for people who like to learn a little every day. None of them needs background knowledge: a talk, a short physics explanation, a photo of a place with a few facts, a comic, or a free course coupon.
The course channel lists coupons for a paid course site and the coupons expire, so check the price before you sign up.
Updated Oct 13, 2026.
@ted_talksEducation
TED talks from speakers in every field. Each post is one talk.
Recent posts are bare links to TED videos on YouTube, including full talks and a few Shorts. The posts carry no titles, captions or commentary, so readers have to open each link to see the speaker and subject. The feed works as a running list of newly published TED videos rather than a place for discussion.
@PhysicsonfingersEducation
Physics explained simply, to show it is less hard than it looks. Carries advertising and accepts donations.
Recent posts are short videos and images showing physics and science in action, each with a one-line caption. They include diffusion, density, friction and inertia, magnetism, vortices from smoke and jet engines, gyroscopes, liquid nitrogen and slow-motion musket fire. Many posts lean towards engineering curiosities and gadgets, such as drilling square holes, a kinetic chair, a robot from Tencent, a watch assembly and a security drone, with a few jokes mixed in.
@internationalgeographicLifestyle
Photos of places around the world, from landscapes to historic sites, with a short description and a few facts.
Recent posts are travel photos with short captions about one place each, often ending with a did-you-know fact. They feature natural sights such as waterfalls in Reunion, Java and Brazil, lakes in Turkey and California, Yosemite in winter and the Serengeti, alongside landmarks like the Sagrada Familia, the Rock of Cashel, castle ruins in Germany, a mosque in Sharm El-Sheikh and the Three Gorges Dam. Beaches and islands from Socotra to Tenerife and Raja Ampat also appear.
@xkcdchannelEntertainment
An unofficial channel that reposts each new xkcd comic a few minutes after it appears on xkcd.com.
Recent posts are new xkcd comics, each posted as the comic number and title followed by a second post with its hover text. Recent strips joke about space missions and spacecraft instruments, geology and mantle plumes, physics and particle accelerators, dinosaurs, radio spectrum auctions and semaphore signalling.
@discudemy_comEducation
Free and fully discounted Udemy course coupons. Coupons run out, so check the price on the course page before enrolling.
Every recent post is a listing for a Udemy course offered free with a coupon, linking to the CouponAmI site. Each listing gives the course title, instructor, rating, enrolment and the original price reduced to free. Subjects are mostly practical tech skills: Python, web development, PHP and MySQL, machine learning and data science, generative AI tools, cybersecurity, video editing, graphic design, project management with Jira and building websites with WordPress.
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