**Science Fact**: Sound travels about four times faster in water than it does in air. This is because water molecules are packed much closer together.

Fun Fact

Science Fact: Sound travels about four times faster in water than it does in air. This is because water molecules are packed much closer together.

Jul 28

artiteacher The golden homecoming of Harry Kane

artiteacher Ballon d'Or Homecoming

The wait is over, the golden ball is finally shining back home!

today Bright autumn foliage blankets the Appalachian Mountains and eastern North America from space.

37m ago

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today

NASA's Perseverance rover proved that Martian dust is rounded while lunar dust remains razor-sharp.

today During a 1,645-Martian-day study, the rover used PIXL and SHERLOC instruments to analyze wind-rounded Martian grains and spiky

37m ago

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today

today Tiny magnetic swirls power the next generation of brain-like computers.

35m ago

K

kort1011

BETA

kort1011 Tap the correct sound patterns to learn how to focus on key spoken details.

4h ago

C

carino

Quiz

Quale dinosauro erbivoro del periodo Cretaceo è famoso per avere tre corna sul muso e un grande collare osseo protettivo dietro la testa?

20h ago

C

carino

Gossip

Weekend a casa da solo: qual è la tua attività preferita?

20h ago

D

debssampaio

Fun Fact

Arquivo de jogo: O mais antigo vídeo de uma partida de futebol data de 1897, na Irlanda do Norte. O clipe histórico tem apenas 43 segundos!

17h ago

C

carino

Note

sul l'era glaciale 5 in rotta di collisione

2d ago

G

geologiejadore

Glossary

maximum glaciaire (nom)
Période d'il y a 20 000 ans où les glaciers ont atteint leur taille maximale. Imagine un mur de glace de trois kilomètres de haut sur Montréal !

4d ago

choko Spooky schoolrooms and cursed screens of Korea and Japan

Achievement

Project completed!

I am a Master of Spooky schoolrooms and cursed screens of Korea and Japan

1d ago

artiteacher The human hands that carved the New York City subway

artiteacher Early New York Subway History

He ran a secret subway with a gust of blowing air, But it took a massive blizzard to put the network there.

8h ago

J

joy The anatomy of a happy dance

A silent signal of goodwill can instantly disarm another's defenses.

5d ago

S

shortcat1996

Guests can stay inside a giant pineapple villa at the Nickelodeon resort in Punta Cana.

shortcat1996 A giant yellow pineapple villa stands next to a private blue swimming pool.

1d ago

S

shortcat1996

shortcat1996 Chef Alvin Cailan elevates ordinary fast food into fine art.

4h ago

K

kort1011 How humans give and take feedback

BETA

kort1011 Swipe specific praise to your teammates to discover how compassionate feedback helps them grow.

4h ago

I

iancgr16

Quiz

¿Cuál es el objetivo principal en una partida estándar del videojuego móvil Free Fire?

3d ago

T

today

Gossip

Should AI ethics guidelines be shaped by world faith leaders?

1d ago

C

carino

Fun Fact

Anno 2039: Il 7 novembre, Mercurio passerà direttamente davanti al Sole, apparendo come un piccolo punto nero. Questo spettacolare transito planetario si verifica solo circa tredici volte ogni secolo.