Feature Article

This study examined the role of indigenous knowledge in climate change adaptation in Uganda with specific focus on the Teso sub-region. Specifically, the study identified indigenous knowledge practices used in climate change adaptation, documented indigenous knowledge in climate observation, and identified constraints to indigenous knowledge use for climate change adaptation.

Untreated waste water is a health hazard. Nonetheless, it should be considered a resource. Unless it is recycled and re-used, it will be impossible to provide all people in the cities of developing countries with safe drinking water. The example of India shows that agglomerations cannot get ever more fresh water from ever farther away.

This review presents biological treatment methods for petroleum refinery wastewater, their applications, advantages and disadvantages. It covers refinery wastewater characteristics, different categories of biological treatment systems (suspended, attached and hybrid growths) and comparison between each system with conventional activated sludge process.

The atmospheric nitrous oxide mixing ratio has increased by 20% since 1750. Given that nitrous oxide is both a long-lived greenhouse gas and a stratospheric ozone-depleting substance, this increase is of global concern. However, the magnitude and geographic distribution of nitrous oxide sources, and how they have changed over time, is uncertain. A key unknown is the influence of the stratospheric circulation which brings air depleted in nitrous oxide to the surface.

As the sea ice recedes in Hudson Bay, killer whales are moving in for a feast. Are they eating the Inuit people's lunch?

The ice has not recovered from a record low in 2007 – ice-free summers could soon become a regular feature across most of the Arctic Ocean.

An atmosphere with less methane would encourage plants to soak up more carbon dioxide, buying precious time to solve the climate problem.

The widespread use of antibiotics may permanently change our gut flora, increasing our risk of obesity and damaging our immune systems.

The side effects of antibiotics may make the war on hostile bacteria trickier to wage than ever. (Editorial)