Richard Ashwell<p>Love this blog by Tom Murphy:</p><p>Do the Math - Using physics and estimation to assess energy, growth, options</p><p>Inexhaustible Flows?</p><p>"All the <a href="https://climatejustice.social/tags/RenewableEnergy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RenewableEnergy</span></a> technologies rely on non-renewable materials. Therefore, inexhaustible flows are beside the point. It’s like saying that fossil fuel energy is not practically limited by available oxygen for combustion, so we can enjoy fossil fuels indefinitely. Or that D–T fusion has billions of years of deuterium available, when there’s no naturally-occurring tritium (thus reliant on limited lithium supply)."</p><p><a href="https://climatejustice.social/tags/Collapse" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Collapse</span></a> <a href="https://climatejustice.social/tags/Doomerism" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Doomerism</span></a> <a href="https://climatejustice.social/tags/DoomerOptimism" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DoomerOptimism</span></a> <a href="https://climatejustice.social/tags/Climate" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Climate</span></a> <a href="https://climatejustice.social/tags/ClimateChange" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ClimateChange</span></a> <a href="https://climatejustice.social/tags/Overshoot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Overshoot</span></a></p><p><a href="https://dothemath.ucsd.edu/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">dothemath.ucsd.edu/</span><span class="invisible"></span></a></p>