The best stock market timing system of four decades ago is still beating a buy-and-hold approach. That’s remarkable for at least two reasons: First, it’s rare for any market timing system to ...

[Baptiste Marx] shares his take on designing emergency structures using PVC pipe in a way that requires an absolute minimum of added parts. CINTRE (French, English coverage article here) is his ...

Introduction: Increasing adoption of hydroponics in food production has increased the demand for soilless growing media. Given the variety of crops and cultivation techniques used in soilless systems, ...

Abstract: In recent years, population growth and limited space have led to challenges, particularly in meeting basic needs like food and water. Closed-environment agricultural systems aim to provide ...

In our modern semi-dystopia, it seems like most companies add automation features to their products to lock them down and get consumers to buy even more proprietary, locked-down components. The few ...