Instant regret

September 17, 2015

Clean energy from coffee grounds sounds wonderful (“Week in higher education”, News, 10 September), but soaking the grounds in sodium hydroxide (made by electrolysis, very energy-intensive) and then heating the result to 900ºC hardly seems environmentally friendly. Better a double espresso and then run on a treadmill for 10 minutes, methinks?

Peter B. Baker
Prestwood


Send to

Letters should be sent to: THE.Letters@tesglobal.com

Letters for publication in Times Higher Education should arrive by 9am Monday. View terms and conditions.

You've reached your article limit

Register to continue

Registration is free and only takes a moment. Once registered you can read a total of 3 articles each month, plus:

  • Sign up for the editor's highlights
  • Receive World University Rankings news first
  • Get job alerts, shortlist jobs and save job searches
  • Participate in reader discussions and post comments
Register

Have your say

Log in or register to post comments

Featured Jobs

Post-doctoral Research Associate in Chemistry

University Of Western Australia

PACE Data Support Officer

Macquarie University - Sydney Australia

Associate Lecturer in Nursing

Central Queensland University
See all jobs

Most Commented

women leapfrog. Vintage

Robert MacIntosh and Kevin O’Gorman offer advice on climbing the career ladder

Mitch Blunt illustration (23 March 2017)

Without more conservative perspectives in the academy, lawmakers will increasingly ignore and potentially defund social science, says Musa al-Gharbi

Alexander Wedderburn

Former president of the British Psychological Society remembered

Michael Parkin illustration (9 March 2017)

Cramming study into the shortest possible time will impoverish the student experience and drive an even greater wedge between research-enabled permanent staff and the growing underclass of flexible teaching staff, says Tom Cutterham

The University of Aberdeen

Tim Ingold and colleagues at the University of Aberdeen have created a manifesto that they hope will preserve higher education's true values