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In 2019, John Green met Henry, a young tuberculosis patient at Lakka Government Hospital in Sierra Leone while traveling with Partners in Health. John became fast friends with Henry, a boy with spindly legs and a big, goofy smile. In the years since that first visit to Lakka, Green has become a vocal and dynamic advocate for increased access to treatment and wider awareness of the healthcare inequities that allow this curable, treatable infectious disease to also be the deadliest, killing 1.5 million people every year.

For over two thousand years, from the Medieval Arabic world to the midst of the covid-19 pandemic, scientific progress has relied on different methods of establishing fact from fiction. Achieve logical perfection, the reasoning went, and you would be rewarded with ultimate, universal truth. But there is far more to proof than axioms, theories and laws: when demonstrating that a new medical treatment works, persuading a jury of someone's guilt, or deciding whether you trust a self-driving car or a financial transaction, the weighing up of evidence is far from simple.

In 2019, author John Green met Henry Reider, a young tuberculosis patient at Lakka Government Hospital in Sierra Leone. John be­came fast friends with Henry, a boy with spindly legs and a big, goofy smile. In the years since that first visit to Lakka, Green has become a vocal advocate for increased access to treatment and wider awareness of the healthcare inequi­ties that allow this curable, preventable infec­tious disease to also be the deadliest, killing over a million people every year. In Everything Is Tuberculosis, John tells Henry’s story.

O istorie ingenioasa si antrenanta a universului, Pamintului, vietii si omului, o poveste care merge de la Big Bang, cind nu eram nimic, pina la aparitia civilizatiei si la noi, cei de astazi. Bill Bryson pleaca de la propria experienta de elev care, intrigat de o imagine a Pamintului in sectiune, citeste manualul de stiinte ca sa gaseasca aici un amestec de lucruri de neinteles – mai putin raspunsurile la ceea ce ii stirnise curiozitatea, inclusiv cum si de unde stim toate aceste lucruri.

A hilarious guide to what's real (and what's not) in our vast, beautiful (and terrifying) universe.

Why are we cruel? Why are we kind? Charles Darwin, the father of modern biology, wrestled with these very questions in order to explain the human race, struggling to fit a loving God into a harsh and challenging universe. Animal behavior scientist and evolutionary biologist Jacob Johnson’s entertaining new take on Darwin’s work explores his crisis of faith, the origin of morality and the evolution of “good” and “evil.”

There are ninety thousand registered dams in the United States, fifty thousand of them classified as “major.” Nearly all of this infrastructure was built during a forty-year period, from 1932 to 1972, in an era of public investment and political consensus that seems inconceivable today. These incredible structures—sometimes called the American Pyramids—helped the country rebound from the Great Depression, brought water and electricity to enormous reaches, helped win World War II for the Allies, and became the basis for decades of prosperous stability.

"An extraordinary history of the perils and promise of every breath we take" James Nestor, New York Times bestselling author of Breath "Another brilliant work from one of the very best science writers, Air-Borne will leave you agog at the incredible world that floats unseen around us" Ed Yong...

Every day we draw in two thousand gallons of air—and thousands of living things. From the ground to the stratosphere, the air teems with invisible life. This last great biological frontier remains so mysterious that it took over two years for scientists to finally agree that the COVID pandemic was caused by an airborne virus. In Air-Borne, award-winning New York Times columnist and author Carl Zimmer leads us on an odyssey through the living atmosphere and through the history of its discovery.

At noon on October 27, 1924, a factory worker was admitted to a hospital in New York City, suffering from hallucinations and convulsions. Before breakfast the next day, he was dead. Alice Hamilton was determined to prevent such a tragedy from happening again. By the time of the accident, Hamilton had pioneered the field of industrial medicine in the United States. She specialized in workplace safety years before the Occupational Safety and Health Administration was created. But this time, she was up against a formidable new foe: America’s relentless push for progress, regardless of the cost.

The simulation hypothesis presents an intricate intersection between scientific inquiry and philosophical contemplation, reviving age-old queries concerning the nature of reality and human existence. At its core, this hypothesis postulates the compelling notion that the universe and all its constituents, including human consciousness, might be products of a simulated construct rather than existing within an objective, external reality.

Measles, once seemingly defeated, is resurgent around the globe. Why, at a time when biomedical science is so advanced, do parents turn away from vaccination, endangering their own children and the health of the wider population? Using a combination of patient narrative, historical analysis, and scientific research, Dr. Adam Ratner, pediatrician and infectious disease specialist, argues that the reawakening of measles and the subsequent coronavirus pandemic are bellwethers of forgotten knowledge—indicators of decaying trust in science and an underfunded public health infrastructure.

We take time for granted as it passes during every moment of our existence. Other things may change, but time remains constant and predictable. The past, the present, and the future exist within a harmonious, reliable, and never-changing system. Or at least that’s how it seems. It was Albert Einstein who, in 1905, first theorized that time might not be quite as straightforward as that. In one of the most influential papers on physics ever published[1], he proposed something called “time dilatation.”

The most authoritative philosophers and historians of science agree in stating that the Copernican revolution did not originate from astronomical motivations but from ideological reasons. Both Copernicus and Galileo shared the Pythagorean doctrine, with an anti-Christian background, even before developing the shaky astronomical model that symbolized it. So, if scientific reasons were not what led to the birth and dominance of the heliocentric model, to what extent does the idea of the Earth's movement correspond to reality?

People often think of imagination as something used only in creative endeavours. In fact, we use imagination constantly as we reminisce, anticipate, plan, daydream, read, create imagined worlds. The truth is we live in the here and now much less than we tend to think. Imagination isn’t the exception in our daily lives; it’s our default setting. Yet only now are we beginning to understand exactly how it works. From hallucination to sleepwalking, from REM sleep to delusions, neurologist Adam Zeman brilliantly guides us through the latest scientific studies in the world of the imagination.

" 18 avril 2018 : Shojiro Takejama appuie sur le bouton rouge qui déclenche son expérience. Boum ! Dans l'explosion qui s'ensuit et qui manque de détruire le laboratoire, le chercheur parvient à produire le champ magnétique le plus intense au monde : 1 000 fois celui qui règne dans un tunnel d'IRM.

After the extinction of the dodo and Carolina parakeet and the collapse of the American bison population, naturalists expected many more vulnerable species to die out with spread of industrialization. This triggered a race to collect rare species of animals expected soon to be lost forever. Established in 1893, Chicago's Field Museum aimed to become a global center of study. Zoologist Daniel Giraud Elliot persuaded museum patrons to fund an immediate expedition to British Somaliland (contemporary Somalia). There, his team hunted and killed hundreds of animals for the growing collection.

يسرد هذا الكتاب تاريخ معرفة الإنسان بنظرية التطور منذ فجر الفلسفة اليونانية وحتى اليوم مرورا بداورين ومندل وغيرهما من علماء الطبيعة والأحياء. ويناقش الكتاب عبر...

19 aprile 1943. Albert Hofmann, chimico in forze all'azienda farmaceutica Sandoz di Basilea, inforca la bicicletta e si avvia verso casa. Sembra un giorno come un altro, se non fosse che ha appena assunto 250 microgrammi di dietilammide-25 dell'acido lisergico, un composto da lui stesso sintetizzato nella ricerca di uno stimolante della circolazione sanguigna. Ciò che accade durante il tragitto sconvolge la sua nozione del reale: visioni coloratissime, meravigliose e mostruose, percezioni di realtà parallele, terrori, euforie. È nato l'Lsd.

Oggi sappiamo che l’universo ha avuto origine con un big bang e si è espanso sotto il controllo delle componenti oscure di materia ed energia; abbiamo imparato come si formano, evolvono e interagiscono le galassie, e come nascono, vivono e muoiono le stelle; abbiamo cercato i pianeti extrasolari e i segnali della vita, ascoltato l’urlo della fusione di due buchi neri e molto altro ancora. Un sapere frutto del balzo in avanti dell’astrofisica e della cosmologia nel Novecento, stimolato e secondato dai grandiosi progressi della fisica e dalla tecnologia.