Ecosystem garden ponds let you create a soothing aquatic centrepiece in your backyard. Designed to replicate the conditions of natural rivers and creeks, ecosystem ponds work alongside the natural environment to provide local plants and wildlife with food, shelter and protection.

Repairing a leaking pond may seem like a daunting task, but with the right product you can have it as good as new in no time. Cemflex® is a universal waterproofer and bonding agent. When mixed with Portland cement and water it forms an effective waterproofing slurry, ideal for reservoirs,shower floor or walls, veranda floors, ponds and retainging walls. It is watertight, non-toxic, oil resistant and UV stable.

The Book of Why: The New Science of Cause and Effect [Paperback] Pearl, Judea and Mackenzie, Dana

Correlation does not imply causation.' This mantra was invoked by scientists for decades in order to avoid taking positions as to whether one thing caused another, such as smoking and cancer and carbon dioxide and global warming. But today, that taboo is dead. The causal revolution, sparked by world-renowned computer scientist Judea Pearl and his colleagues, has cut through a century of confusion and placed cause and effect on a firm scientific basis. Now, Pearl and Science journalist Dana Mackenzie explain causal thinking to General readers for the first time, showing how it allows us to explore the world that is and the worlds that could have been. It is the essence of human and artificial intelligence. And just as pearl's discoveries have enabled machines to think better, the book of why explains how we can think better.

The curious little monkey always got into trouble and ended up OK; his creators needed a little of his luck.

One of the most important abilities of a MGO is being curious – to ask those questions (and keep asking them) that get to the deeper set of answers that will reveal the key drivers of the caseload donor.

The curious trait happy professionals and successful job seekers ...

A basic lesson in marine biology as it applies to the aquarium hobby goes as follows: if you stock a tank with males and females of the same species, chances are they’ll mate and reproduce at some point, often during the spring, and the female will lay dozens of eggs for insemination. In some cases, fish are live-bearers and “mouthbrooders,” like the African cichlids in the picture. Some species will breed at a prolific pace that keeps fish keepers on their toes, so you’ll have to make certain decisions in this regard. Keeping only males or only females of the same species is recommended if you don’t want to deal with breeding. Otherwise, here are five tips you can follow when your fish reproduce.

Most fish species rest on the bottom whilst in their sleep phase and appear for all intents and purposes to be in a daydream-like state. Some even lie on their sides, like this peacock wrasse

The Ringtail Unicornfish, which occurs in tropical marine waters of the Indo-Pacific. All fish sleep, even the weird-looking ones. Bernard Spragg/Flickr

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