The pressure on the environment of building during the past 5000 years can be observed clearly from the air. In a recent lecture at the Society of Chemical Industry (SCI), aerial photographer and concrete specialist Christopher Stanley illustrated the evolution of construction and its lasting impact, from stone circles to skyscrapers.
Stanley’s lecture ‘Managing the environment: a perspective from land, air and sea’ followed the presentation of the 2002 SCI Environment Medal in recognition of his contributions to improving the built environment. A Fellow of the Institute of Concrete Technology, Hong Kong, Christopher Stanley identified the constraints caused by environmental concerns on quarrying and aggregate supplies in the region. Previously, waste concrete from demolitions was just tipped into Hong Kong bay, but there is now a move to crush concrete and reuse it as an aggregate in new building work.
Stanley explained that the development of communities, from hamlets to towns to the modern metropolis, has left its mark on the environment. The advent of new building materials and the change in social patterns within modern developments has also altered the environments in which people live and work.
Kelly Quigley | alphagalileo
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Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
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