27th March, 7:55 am Mar 27th

Grab a copy of the Guardian today (27th March) to read me talking about the london bloggers projects and Geographic Information Systems (GIS)

An online version of the article is available here.

This was posted on Thursday 27th March, 2003 at 7:55 am Pacific.

Read more posts from March 2003.

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This is the personal website of Cal Henderson, Slack co-founder & CTO.

I give occasional talks, write code and sometimes articles.

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