Summer reading is most often associated with racy romances and clean - knuckle joint thrillers . But why not pass those extra hours of daylight flexing your mental musculus instead ? Here are eight ebooks that will eat your encephalon and keep you harbour at the same time . Bonus : each of these ebooks ison sale for $ 3.99 or less until July 22 . So stockpile up . Your brain will thank you .

1. Chaosby James Gleick

This blockbuster ledger first brought the butterfly stroke effect to the forefront of general knowledge . rightful , topsy-turvydom hypothesis is pure mathematics — with some physics , technology , and economics to boot — but Gleick break it down with a novelist ’s skin senses . dally professor at your next dinner party party and treat your friends with mind - stoop fact such as :

Fact # 1 : Chaos might not be the most precise name for this brave raw field — rather than referring to utter randomness , chaos theory moves past Newtonian physics and refer more to a given scientific phenomenon ’s volatility .

Fact # 2 : The famed crimson spot on Jupiter is a unadulterated good example of bedlam theory . After theVoyager 1spacecraft took detailed photographs of the spot in 1979 , scientist were able to really observe a hurricane - system of swirling gas . They found that the spot is a ego - orchestrate system that owe its creation to unpredictable phenomenon . In other word , its social organization is ultimately regulated by topsy-turvyness .

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2.Moon Shotby Jay Barbree

The gripping tale of America ’s space geographic expedition from the time of Alan Shepard ’s first flight until he and 11 others had walk on the moonshine . It ’s not rocket science per se , but you will still learn enough about the history of the outer space political program to be way forward of the curve when thatmuch talked aboutMad Man in Spaceshowhits the airwaves . Among the impressive facts you ’ll pick up :

Fact # 1 : In add-on being the second person to walk on the moon , Buzz Aldrin was the first soul to take communion ( or should we say " comoonion " ? ) on the Sun Myung Moon . Yep , you learn that right ; Aldrin wished to mark the function and give thanks by admit a thimble - full of wine and wafer prepared by his pastor .

Fact # 2 : Another amusing fact about Aldrin : his mother ’s maiden name was Moon .

3. Annapurna by Maurice Herzog

An engrossing first - hired hand account of the first expedition in story to breast and return from   Annapurna I , a peak over 8,000 meters high . in the beginning indite in source Michel Herzog ’s native French , Annapurnaremains just as spellbind today as it was on its first publication over 50 years ago .

Fact # 1:“Annapurna " is Sanskrit for " full of nutrient . " More informally , the name name to the goddess of the harvesting , or the " universal goddess . "

Fact # 2 : In May of this yr , The Economistreported that Annapurna is the world ’s deadliest pinnacle , with a mortality charge per unit for climber of over 34 percent since 1950 . In comparison , the statistic is just 4 percent for those who seek to wax Everest .

4. West with the Night by Beryl Markham

One of the corking adventure Scripture of all time , this engulf memoir is less about challenge your intellect and more about feeding your psyche . Deftly write and heartfelt , this mediation on a life well lived will inspire your own intrepid spirit .

Fact # 1 : Markham was the first woman to fly solo across the Atlantic from east to west .

Fact # 2 : Another European X - slick living in Africa , Karen Blixen ( otherwise known by her playpen name Isak Dinesan ) befriend Markham while they were both living in the countryside outside of Nairobi . In the film version of Blixen ’s memoir , Out of Africa , actress Suzanna Hamilton present a character base on Markham .

5. Summer of ‘49 by David Halberstam

Halberstam ’s classic # 1 bestseller transports us to one magical summertime when baseball ’s fiercest rivalry captured the country ’s imaginativeness and changed the athletics forever . America ’s interest is also a font of entrancing trivia . affect your friends with fact from one of baseball game ’s most memorable seasons ever :

Fact # 1 : The ' 49 baseball time of year took sibling rivalry to a whole different level as Joltin ' Joe DiMaggio of the Yankees and Dom " Little Professor " DiMaggio of the Red Sox were pitted against each other . The latter went on to sustain a 34 - game hitting streak in July and August .

Fact # 2 : Summer of ' 49has been regarded as an allegory for a elementary prison term . A contemporary sports spreader even go so far as to claim that it was " the last moment of innocence in American lifespan . " Paul Simon , the son of a devoted Yankees rooter , hark back this personnel casualty of pureness in his far-famed song " Mrs. Robinson , " in which he keen the famous centre fielder ’s absence seizure in American sports culture .

6. Roosevelt: The Lion and the Fox by James MacGregor Burns

Pulitzer - Prize succeeder James MacGregor Burns ' engrossing biography of FDR covers the darling president ’s life from his year of birth to 1940 . Dense with detail but wildly absorbing as a tale , Burns provides a circumspect and elaborate report of the great prexy ’s life and career , including details such as :

Fact # 1 : Despite the demands of navigate the commonwealth through an economical depression and a world war , Roosevelt made time for his favourite sideline : stamp collecting . At the end of his life , he had amassed over one million in his collection .

Fact # 2 : Though he enjoyed the longest terminal figure in office contain by any president , Roosevelt made an unsuccessful bid for the Vice Presidency in 1920 ; he was defeated by Warren G. Harding and his run mate Calvin Coolidge .

7. Muhammad Ali by Thomas Hauser

Float like a butterfly , sting like a bee . Is there any other packer who has make as mythic a status as Muhammad Ali ? have interviews with friends , family , rivals , this definitive biography contains everything you postulate to know about the boxing caption , including these minuscule known facts :

Fact # 1 : Ali did not box from historic period 25 to 28 , prime years for an athlete . A vehement opposite of the Vietnam War , in 1967 he was banned and his license was suspended in reaction to his refusal to bring together the military machine . It was restored in 1970 .

Fact # 2 : Before he was known as " The Greatest , " Ali was known as the Louisville Lip , a nickname which references his hometown .

8. Paris Revealed by Stephen Clarke

Ah Paris ! Few burgs have barrack as much air castle as this famed capital . British ex - pat Stephen Clarke share his savoir - faire in this impertinent foreigner - turn - insider guide , pack with tips and surprising facts such as :

Fact # 1 : Americans might not be the only ones who affect Parisians as unduly stuck-up — study say that their compatriots accord . A 2010 pate by a French home news magazine establish that most French people from the outer provinces view Parisians as " arrogant , strong-growing , accented , snobbish and self - haunted … "

Fact # 2 : Rumor has it that crickets bristle in the Paris metro . Many traveler have account get a line the insects chirruping , and there is even a league devoted to protecting these critters . Founded in 1992 , the Protection League for the Crickets of Paris Metro are campaigning to convert an unused subway station to an auditorium of kind where the subterranean cricket would be able-bodied to sing and breed in peace .