The approach of the United Nations Climate Change Conference in Paris in
early December has global leaders from every sector thinking about technology opportunities
to help meet greenhouse-gas-emissions reduction goals in an effort to mitigate climate
change.
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| Photonics at work: A schematic illustration of electromagnetic characterization and detection of pollutants on a sea surface, in an SPIE Newsroom article by researchers at Lab-STICC, CNRS, ENSTA Bretagne. |
But there is another
sort of opportunity for the photonics community to take up: speaking out about
the urgency to take action, particularly in the face of climate-change
skepticism or denial.
UK Astronomer Royal Sir
Martin Rees is among scientists who are doing so. Framing the issue in a recent
commentary in the Financial Times, he
characterized this century as the first in the Earth’s 45-million-year history
when “one species -- ours -- can determine the fate of the entire biosphere.”
While there may be some uncertainties
in climate science, Rees said, it is certain that future generations will be
affected by existing public policies and others implemented in our lifetimes.
Anyone who cares
about those generations -- the grandchildren of today’s young children and
others living in the next century and beyond -- “will deem it worth making an
investment now to protect them from worst-case scenarios,” Rees said.
Given that, he said,
the conversation needs to be based on “the best knowledge that the 21st century
has to offer.”
Today’s knowledge
includes work toward photonics-driven prospects such as:
- new developments in renewable energy generation and storage that will render those sources cheaper than electricity from coal-fired power plants
- increasing agricultural productivity in the face of rising temperatures and more demands on water supplies as well as available agricultural land
- protecting vulnerable populations being hit by an increasing number of extreme weather events annually
- detecting oil spills or other pollutants in water, even after they have begun to emulsify in rough seas.
Policy makers and
non-scientists are supporting efforts to grow our knowledge even further, and
working to strengthen the investment for future generations.
Governmental agencies
and university departments collaborate in competitions such as the U.S.
Department of Energy Solar Decathlon. Teams design, build, and operate houses
powered by solar energy, and that are affordable, energy efficient, attractive,
and easy to live in. Congratulations to this year’s winner, Stevens Institute of Technology!
Citizen scientists
get involved through activities such as the recent iSPEX-EU project. Using
an add-on optical sensor with their smartphones, people across Europe measured
and reported on aerosols during a 45-day period. The crowd-sourced approach
provided information at times and locations not covered by current air
pollution monitoring efforts.
As the world gears up
for the climate conference in Paris next month, it will be wise to consider, as
Rees has said, that “Whatever happens in this uniquely crucial century will
resonate into the remote future and perhaps far beyond the Earth.”
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