Figure 2: Ozonation reactor (left) including a soil sample, and the excess ozone gas is trapped in the beaker to the right to be measured.

Ozone as a Safer and Greener Alternative to Pesticides

by Nahed Msayleb The use of pesticides to control plant diseases that live in the soil affects beneficial microorganisms that are necessary for nutrients to circulate and hence limits soil fertility. Accordingly, the need for more eco-friendly ways to control plant diseases is growing. A potential alternative to the synthetic pesticides that deplete soil biodiversity and…

Screenshot of the Erdas Imagine interface: on the left is a false color image showing water bodies (blue/dark) and healthy vegetation as red. On the right is a processed image for daily ET, where pixels with higher ET having a lighter color, for example the water bodies and the irrigated fields.

A view from Space: using satellites to manage water

by Mcebisi Mkhwanazi For decades, satellite imagery has been used for environmental monitoring, with water management being one of the areas of application. For example, many are familiar with the Landsat images showing Lake Chad in Africa shrinking over the years. Now satellites are used for more than just providing visual images. This paper discusses…

Figure 2: Carbon footprint of food waste compared with total carbon footprint of the world's largest carbon emitting countries.

Stopping global food waste might be harder than you think

By Alexandra Heeney Do you usually buy your groceries in a single shopping trip each week? Are there large stacks of fruit and vegetables on display at the grocery stores you frequent? Do you compost your food scraps? Do you frequently forget to eat leftovers before they’ve gone bad? Do you eat meat? If so,…