Ion Engine in Ground Level Flight

Ion engines have been used in space for a long time as their low power is not a big issue when there is no air resistance and low acceleration almost irrelevant in the timescales involved.  It was thus a rather special recent event when, to little fanfare, an ion drive powered model aircraft built by… Continue reading Ion Engine in Ground Level Flight


December 2018 Global Warming Projections for 2100

Climate Action Tracker updated their end of century forecasts on 11 December in the middle of the Katowice meeting which presumably was not a coincidence. Had there been no actions taken to limit global warming (the 'baseline scenario') they predict the temperature rise by end century above pre-industrial levels would likely be in the range… Continue reading December 2018 Global Warming Projections for 2100

South Africa GHG Emission Reductions – Scaling Up

The South African analysis is the first in a series to be produced by Climate Action Tracker (CAT) comprising three independent research organisations (Ecofys, NewClimate Institute and Climate Analytics) tracking climate action since 2009.  Scaling up refers to the likely measures required to bridge the gap between current emissions projections and Paris compatible pathways. Reports… Continue reading South Africa GHG Emission Reductions – Scaling Up

Shipping Greenhouse Gas Emissions and Possible Solutions

About 90% of international trade in goods is via shipping, involving over 100,000 commercial ships. The propulsion units rank among the world's most powerful machines (the Wartsila Sulzer RT-Flex 96 C has an output of approximately 80,000 KW or 108,900 BHP) yet few alternatives to fossil fuel burning have been widely introduced. On top of… Continue reading Shipping Greenhouse Gas Emissions and Possible Solutions

Countries’ Progress on Limiting Greenhouse Gas Emissions

Climate Action Tracker (CAT) produces summaries for various countries on their progress and commitments on limiting greenhouse gas emissions and is the product of three research organisations - Climate Analytics, NewClimate Institute and Ecofys. For this blog I have chosen my own South Africa as an example but other similar summaries are available for other… Continue reading Countries’ Progress on Limiting Greenhouse Gas Emissions