Top toughest exams in the world:
1. 🇨🇳 China → Gaokao Exam
2. 🇮🇳 India → IIT JEE Exam
3. 🇮🇳 India → UPSC Exam
4. 🏴 England → Mensa
5. 🇺🇸🇨🇦 US/Canada → GRE
6. 🇺🇸🇨🇦 US/Canada → CFA
7. 🇺🇸 US → CCIE
8. 🇮🇳 India → GATE
9. 🇺🇸 US → USMLE
10. 🇺🇸 US → California Bar Exam
Self-Control as a Performance-Enhancing Drug
Self-control is an all-purpose good like IQ: It predicts health, wealth, and all things good.
https://t.co/zH6q96TNH8
It is worth remembering that right now, we are moving through space at incredible speed.
The animation shows the relative speeds, ranging from the Earth's rotation to the motion of our galaxy.
This photo of the sun might not seem too impressive… until you realize it was taken at night - not by looking up but by looking down, straight through the entire Earth, using neutrinos rather than light. Amazing! https://t.co/B11FRgpkkg
When two black holes collide, space itself shakes
One of the most powerful events in the universe happens when two black holes merge. This cosmic collision sends ripples through space-time called gravitational waves, creating a shockwave across the universe.
Dealing with difficult people may be hazardous to your health.
Data: Each additional "hassler" in your network predicts 1.5% faster biological aging—and worse health a year later. Non-spouse family hasslers are the most problematic.
Some ties aren't worth the toll they take.
Your heart beats about 100,000 times a day. This computer-generated cross-section shows what those beats look like from the inside as the muscle relaxes and contracts.
📽️: DrJanaOfficial | CC BY-SA 4.0