We can now measure carbon flux from space


Financial Times, 23 February 2018:

Sir, George Whitesides (Letters February 21) states that the “Blue
Marble” image of Earth, taken from space in 1972, gave rise to the
modern environmental movement. This overlooks the campaign by
Stewart Brand in 1966 to force Nasa to release a rumoured colour photo
of Earth. The image was subsequently used on the covers of Brand’s
seminal Whole Earth Catalog that offered tools for ecological living and
was published from 1969 to 1972. Greenpeace and Friends of the Earth
were founded in 1971. The great value of space access is that it is now
possible, using hyperspectral technology, to measure from space the
carbon flux on areas of Earth. This will make global carbon pricing and
trading viable as it brings scientific integrity to carbon sequestration
claims. Carbon markets have failed previously due to political
intervention and inaccurate measurement. Soil and forests, as carbon
sinks, are our main hope for reducing atmospheric greenhouse gas levels.
Satellites can help.

Craig Sams
Hastings, E Sussex, UK



Our presence in space is helping us manage climate change


Financial Times, 21 February 2018:

Robin Russell-Jones (Letters, February 16) is right to assert that solving
climate change will involve a variety of Earth-bound commitments. He is
wrong though to dismiss the improvement of access to space by private
companies as pointless and harmful. The relevance of space-based
technologies to climate change mitigation has been self-evident since the
“Blue Marble” image of Earth, taken in 1972 by the crew of Apollo 17,
helped give rise to the modern environmental movement. Since then our
knowledge and understanding of the causes and effects of climate change
on the planet, as well as how to better manage the consequences for its
inhabitants, have been immeasurably improved because of our presence
in space. The new commercial space companies such as Virgin Galactic
aim to bring space transportation into the 21st century with reusable
space craft, cutting the cost and environmental impact of launch and so
permitting innovative space-based solutions to a host of Earth-based
challenges — including that of climate change.

George Whitesides
Chief Executive, Virgin Galactic

Planetary techno-fixes will not solve all our problems


Financial Times, 15 February 2018:

Elon Musk’s ambition to populate the world with electric vehicles
running on solar-powered batteries is a vision we can admire, but
pretending that Mars provides some insurance policy against fouling up
our planet is delusional (Opinion, Feb 10). Richard Branson is another
entrepreneur whose obsession with space travel is combined with concern
about climate change; but not every problem is amenable to planetary

The solution to climate change is closer to home and requires a huge
investment in renewables and energy conservation, combined with a
carbon tax that reflects the damage that fossil fuels impose on human
health and our environment. Virgin Galactic or building colonies on Mars
are vainglorious projects with little purpose and a huge carbon footprint.

Dr Robin Russell-Jones
Chair, Help Rescue the Planet,
Stoke Poges,