Dave Challenger

Being me and life educated

[Dave Challenger @ChallengerDave]

https://t.co/JmdMiyDVy0

[Dave Challenger @ChallengerDave]

https://t.co/Qy1kdCkKoI

[Dave Challenger @ChallengerDave]

https://t.co/0FZee0g1eD

[Dave Challenger @ChallengerDave]

https://t.co/R1GclLmnFg

[Dave Challenger @ChallengerDave]

https://t.co/h7Rpkunjot

[Dave Challenger @ChallengerDave]

https://t.co/Sn08e5eO2k

[Francesca Albanese, UN Special Rapporteur oPt @FranceskAlbs]

Thank you President 🇸🇮.
Palestine is the moral compass of our time.
From Spain to Slovenia there is hope for Europe. A Europe that puts people above banks and markets, rights above profits, and respects int'l law regardless of political calculus.

[Francesca Albanese, UN Special Rapporteur oPt @FranceskAlbs]

Thank you President 🇸🇮.
Palestine is the moral compass of our time.
From Spain to Slovenia there is hope for Europe. A Europe that puts people above banks and markets, rights above profits, and respects int'l law regardless of political calculus.

[Massimo @Rainmaker1973]

Dr. Muhammad Mashali, lovingly known across Egypt as “The Doctor of the Poor,” never owned a car or a cellphone. He lived without luxury, but spent over 50 years quietly healing thousands of lives.

Every day, he walked the streets of Tanta in Egypt’s Nile Delta to his modest clinic, where patients, rich or poor, were always welcome. Many paid nothing. Some days he treated 40 to 50 people, often covering the cost of their medicine himself.

After graduating with honors in 1967, he made a solemn vow: he would never turn away anyone who couldn’t afford treatment, a promise inspired by watching his father sacrifice everything for his education.

“My reward is not money,” he once said, “it’s the smile of someone whose suffering has ended.”

When a wealthy businessman once gifted him $20,000, a car, and an apartment, Dr. Mashali sold it all and used every penny to buy medical equipment for his patients.

He treated everyone with equal dignity, regardless of religion, status, or background. For more than ten hours a day, he offered not just medicine, but compassion and hope.

Dr. Muhammad Mashali passed away in 2020 at the age of 76, leaving behind no wealth, no grand possessions, only a profound legacy of kindness.

[Dave Challenger @ChallengerDave]

@Rainmaker1973 A true humanitarian hero 🙏

[Dave Challenger @ChallengerDave]

https://t.co/hq6txYoRC5

[Physics In History @PhysInHistory]

The word “algebra” comes from the Arabic word “al-jabr”, which means “reunion of broken parts” or “restoration”. This term was used by the Persian mathematician Muḥammad ibn Mūsā al-Khwārizmī in his 9th-century book “Kitab al-jabr wa al-muqabala”, which introduced methods for solving equations and laid the foundation for modern algebra. The word “algebra” was later translated into Latin and other languages, and gradually expanded to cover a wider range of mathematical topics and concepts.

[Dave Challenger @ChallengerDave]

https://t.co/wz05xvY5NT

[Dave Challenger @ChallengerDave]

https://t.co/qGNdUo2qnL

[Dave Challenger @ChallengerDave]

https://t.co/0V702vPLQH

[Dave Challenger @ChallengerDave]

https://t.co/n1gNWMc4E1

[Dave Challenger @ChallengerDave]

https://t.co/GyXk20BZmd

[Dave Challenger @ChallengerDave]

https://t.co/ICmxR2IWl9

[Dave Challenger @ChallengerDave]

https://t.co/1wuR0bz4gD

[Dave Challenger @ChallengerDave]

https://t.co/ee4CQa1ZaU

[Science Magazine @ScienceMagazine]

In 1974, paleoanthropologist Don Johanson and student Tom Gray unearthed a 40% complete skeleton of an early human ancestor, fundamentally changing the human family tree. The specimen acquired a nickname that persisted: Lucy, after the Beatles song playing at the fossil hunter’s camp—“Lucy in the Sky with Diamonds.”

At 3.2 million years old, some thought her species, Australopithecus afarensis, was close to when the ancestor of humans had split from the ancestor of chimpanzees. But in the past 50 years, discoveries of hominins both older and the same age as Lucy have pushed that split millions of years deeper in time, and challenged her position as mother of us all.

Learn more: https://t.co/e1uHSG8IMU #ScienceMagArchives