“Smart and funny, with characters so real and vulnerable, you want to send them care packages. I loved this book.” —Rainbow Rowell

From debut author Mary H.K. Choi comes a compulsively readable novel that shows young love in all its awkward glory—perfect for fans of Eleanor & Park and To All the Boys I’ve Loved Before.

For Penny Lee, high school was a total nonevent. Her friends were okay, her grades were fine, and while she’d somehow landed a boyfriend, they never managed to know much about each other. Now Penny is heading to college in Austin, Texas, to learn how to become a writer. It’s seventy-nine miles and a zillion light years away from everything she can’t wait to leave behind.

Sam’s stuck. Literally, figuratively, emotionally, financially. He works at a café and sleeps there too, on a mattress on the floor of an empty storage room upstairs. He knows that this is the god-awful chapter of his life that will serve as inspiration for when he’s a famous movie director but right this second the seventeen bucks in his checking account and his dying laptop are really testing him.

When Sam and Penny cross paths it’s less meet-cute and more a collision of unbearable awkwardness. Still, they swap numbers and stay in touch—via text—and soon become digitally inseparable, sharing their deepest anxieties and secret dreams without the humiliating weirdness of having to, you know, see each other.

From New York Times bestselling author Mary H.K. Choi comes a funny and emotional story about two estranged sisters and how far they'll go to save one of their lives - even if it means swapping identities.

Jayne and June Baek are nothing alike. June's three years older, a classic first-born, know-it-all narc with a problematic finance job and an equally soulless apartment (according to Jayne). Jayne is an emotionally stunted, self-obsessed basket case who lives in squalor, has egregious taste in men, and needs to get to class and stop wasting Mom and Dad's money (if you ask June). Once thick as thieves, these sisters who moved from Seoul to San Antonio to New York together now don't want anything to do with each other.

That is, until June gets cancer. And Jayne becomes the only one who can help her.

Flung together by circumstance, housing woes, and family secrets, will the sisters learn more about each other than they're willing to confront? And what if while helping June, Jayne has to confront the fact that maybe she's sick, too?

The first comprehensive treatment of long-wavelength laser technology

Because of very strong molecular absorption between 2 mm to 1000 mm, compact semiconductor lasers in this spectral range are ideal components for a wide variety of applications ranging from ultra-sensitive detection of molecules, to the study of fine structures of molecules, to studies of the origin of the universe. However, because of the very rapid progress made in these long-wavelength semiconductor lasers in recent years, no comprehensive information covering the entire field has been available up to this point.

Long-Wavelength Infrared Semiconductor Lasers fills the need for a reference that covers the vast scope of coherent semiconductor sources that emit in this important spectral region. Written by today's foremost experts in the field, the book covers the latest knowledge in the areas of:

• Quantum cascade lasers
• Interband mid-infrared lasers fabricated from InGaAs, antimonides, and lead-salt materials
• Hot-hole lasers
• Photomixers

Researchers, application engineers, graduate students, and others who develop mid- to far-infrared emitters and use them for spectroscopy, astrophysics, environmental monitoring, and process control will find Long-Wavelength Infrared Semiconductor Lasers a necessary resource.

On paper, college dropout Pablo Rind doesn't have a whole lot going for him. His graveyard shift at a twenty-four-hour deli in Brooklyn is a struggle. Plus, he's up to his eyeballs in credit card debt. Never mind the state of his student loans.

Pop juggernaut Leanna Smart has enough social media followers to populate whole continents. The brand is unstoppable. She graduated from child stardom to become an international icon and her adult life is a queasy blur of private planes, aspirational hotel rooms, and strangers screaming for her just to notice them.

When Leanna and Pablo meet at 5:00 a.m. at the bodega in the dead of winter it's absurd to think they'd be A Thing. But as they discover who they are, who they want to be, and how to defy the deafening expectations of everyone else, Leanna and Pablo turn to each other. Which, of course, is when things get properly complicated.

From debut author Mary H.K. Choi comes a compulsively readable novel that shows young love in all its awkward glory - perfect for fans of Eleanor & Park and To All the Boys I've Loved Before.

For Penny Lee high school was a total non-event. Her friends were okay, her grades were fine, and while she somehow managed to land a boyfriend, he doesn't actually know anything about her. When Penny heads to college in Austin, Texas, to learn how to become a writer, it's seventy-nine miles and a million light years away from everything she can't wait to leave behind.

Sam's stuck. Literally, figuratively, emotionally, financially. He works at a café and sleeps there too, on a mattress on the floor of an empty storage room upstairs. He knows that this is the god-awful chapter of his life that will serve as inspiration for when he's a famous movie director but right this second the seventeen bucks in his bank account and his dying laptop are really testing him.

When Sam and Penny cross paths it's less meet-cute and more a collision of unbearable awkwardness. Still, they swap numbers and stay in touch - via text - and soon become digitally inseparable, sharing their deepest anxieties and secret dreams without the humiliating weirdness of having to see each other.