Trace the history of passports to find out why we need these documents and what challenges travelers face within this system. -- Passports are not the first form of travel documents: in Ancient Egypt, travelers carried “letters of safe conduct” issued by rulers; in Han China and Tudor England, foreigners were issued travel passes. However, for much of human history, borders have been relatively fluid, and travel lacked bureaucratic requirements. So, what changed? Kristin Surak details the history of the passport system. Lesson by Kristin Surak, directed by Tomás Pichardo-Espaillat. Support Our Non-Profit Mission ---------------------------------------------- Support us on Patreon: http://bit.ly/TEDEdPatreon Check out our merch: http://bit.ly/TEDEDShop ---------------------------------------------- Connect With Us ---------------------------------------------- Sign up for our newsletter: http://bit.ly/TEDEdNewsletter Follow us on Facebook: http://bit.ly/TEDEdFacebook Find us on Twi

TUL PAKORN T.Jul 14, 2026

TIKTOK_IGP👮🏽Jul 14, 2026

Døna2001Jul 14, 2026

Boo✅and gacha❤️Jul 7, 2026

Explore the incredible systems that create breathable air in space, and how we can adapt that process for future expeditions. -- For over 25 years, the International Space Station’s air supply systems have revolutionized space missions. Yet the need for regular maintenance, repairs, and upgrades has pushed engineers to develop even more reliable systems for future spacecraft. How do we create breathable air in space? And what does that look like for longer expeditions? Alvaro Romero-Calvo and Theo St Francis investigate. Lesson by Alvaro Romero-Calvo and Theo St Francis, directed by Lazy Chief. Support Our Non-Profit Mission ---------------------------------------------- Support us on Patreon: http://bit.ly/TEDEdPatreon Check out our merch: http://bit.ly/TEDEDShop ---------------------------------------------- Connect With Us ---------------------------------------------- Sign up for our newsletter: http://bit.ly/TEDEdNewsletter Follow us on Facebook: http://bit.ly/TEDEdFacebook F

bereketJul 7, 2026

enkusha____Jul 7, 2026

KevinJul 7, 2026

H0n€Y 🔥🔥Jul 3, 2026

Dive into the history of the life-saving procedure of blood transfusions and how it has evolved since the 17th century. -- In 1881, doctor William Halsted rushed to help his sister Minnie, who was hemorrhaging after childbirth. He quickly inserted a needle into his arm, withdrew his own blood, and transferred it to her. After a few uncertain minutes, she began to recover. What made this blood transfusion successful? Bill Schutt explains the history of the life-saving procedure. Lesson by Bill Schutt, directed Hype CG. Animator's website: https://www.luisacopetti.com/ Sign up for our newsletter: http://bit.ly/TEDEdNewsletter Support us on Patreon: http://bit.ly/TEDEdPatreon Follow us on Facebook: http://bit.ly/TEDEdFacebook Find us on Twitter: http://bit.ly/TEDEdTwitter Peep us on Instagram: http://bit.ly/TEDEdInstagram View full lesson: https://ed.ted.com/lessons/how-does-blood-transfusion-work-bill-schutt Thank you so much to our patrons for your support! Without you this video

Cute catJul 3, 2026

Inventions that Shaped History

Mungkin Anda Juga Suka

Grade 10 Mathematics - First Quarter

Grade 11 Equations

GRADE 9 MATHEMATICS

Trigonometry grade 11

Math 8 Quarter 1 | GRADE 8 1st Quarter Lessons | Matatag Revised K to 12 Curriculum Mathematics Tagalog Tutorial First Quarter

Grade 10 Functions

Kuwentong Pambata

GRADE 9 MATHEMATICS

Estudyantipid Full Episodes

Organic Chemistry: Naming organic compounds

Read and Quiz

Momentum Playlist Grade 12

Finance Maths Lit

Playing With Language

The Big Questions

Pagsasanay sa Pagbasa

Electricity Grade 11

Grade 12 Physical Science Exams

Kelas 3 | Kuartal Pertama | Minggu 4

Statistics Grade 11

MATH 7 QUARTER 1 | GRADE 7 1st QUARTER LESSONS | MATATAG CURRICULUM MATHEMATICS TAGALOG TUTORIAL FIRST QUARTER

Electrochemistry

Statistics Grade 12

Measurement Grade 11

Pilihan Unggulan

Gamixo

VSKIT Drama