What We Are Reading Today:: How to Walk on Water and Climb up Walls by David L. Hu

Updated 01 November 2018
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What We Are Reading Today:: How to Walk on Water and Climb up Walls by David L. Hu

  • David Hu takes readers on an accessible, wondrous journey into the world of animal motion

Insects walk on water, snakes slither, and fish swim. Animals move with astounding grace, speed, and versatility; how do they do it, and what can we learn from them? 

In How to Walk on Water and Climb up Walls, David Hu takes readers on an accessible, wondrous journey into the world of animal motion. 

From basement labs at MIT to the rain forests of Panama, Hu shows how animals have adapted and evolved to traverse their environments, taking advantage of physical laws with results that are startling and ingenious, says a review on the Princeton University Press website.

In turn, the latest discoveries about animal mechanics are inspiring scientists to invent robots and devices that move with similar elegance and efficiency.

Hu follows scientists as they investigate a multitude of animal movements, from the undulations of sandfish and the way that dogs shake off water in fractions of a second to the seemingly crash-resistant characteristics of insect flight. 


Review: ‘Relay’

Updated 21 December 2025
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Review: ‘Relay’

RIYADH: “Relay” is a thriller that knows what its role is in an era of overly explained plots and predictable pacing, making it feel at once refreshing and strangely nostalgic. 

I went into the 2025 film with genuine curiosity after listening to Academy Award-winning British actor Riz Ahmed talk about it on Podcrushed, a podcast by “You” star Penn Badgley. Within the first half hour I was already texting my friends to add it to their watchlists.

There is something confident and restrained about “Relay” that pulls you in, and much of that assurance comes from the film’s lead actors. Ahmed gives a measured, deeply controlled performance as Ash, a man who operates in the shadows with precision and discipline. He excels at disappearing, slipping between identities, and staying one step ahead, yet the story is careful not to mythologize him as untouchable. 

Every pause, glance, and decision carries weight, making Ash feel intelligent and capable. It is one of those roles where presence does most of the work.

Lily James brings a vital counterbalance as Sarah, a woman caught at a moral and emotional crossroads, who is both vulnerable and resilient. The slow-burn connection between her and Ash is shaped by shared isolation and his growing desire to protect her.

The premise is deceptively simple. Ash acts as a middleman for people entangled in corporate crimes, using a relay system to communicate and extract them safely. 

The film’s most inventive choice is its use of the Telecommunications Relay Service — used by people who are deaf and hard of hearing to communicate over the phone — as a central plot device, thoughtfully integrating a vital accessibility tool into the heart of the story. 

As conversations between Ash and Sarah unfold through the relay system, the film builds a unique sense of intimacy and suspense, using its structure to shape tension in a way that feels cleverly crafted.

“Relay” plays like a retro crime thriller, echoing classic spy films in its mood and pacing while grounding itself in contemporary anxieties. 

Beneath the mechanics and thrills of the plot, it is about loneliness, the longing to be seen, and the murky ethics of survival in systems designed to crush individuals. 

If you are a life-long fan of thrillers, “Relay” might still manage to surprise you.