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For nearly four decades Mark Spencer has balanced his career as a dental surgeon with his passions for ocean exploration and underwater photography. His photographs - sometimes of rarely seen shipwrecks hidden in the deep - have been featured in publications such as National Geographic and Australian Geographic. A scientist at heart, Mark has long held a curiosity about the deeper levels of conscious awareness he experiences in meditation and ...

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Why do bad things happen? Where can you place your trust? Where is heaven? What kind of people will be there? What kind of people will not be there?

Ion exchange materials are extremely effective absorbents generally containing some functional groups with insoluble structures, which have high affinity capacities towards the targets among a series of structurally similar ions or ion groups. In recent decades, the various methods used to preparing the absorbents for contaminant removal and resource recycle from environment have been extensively studied under the backgrounds of environment po...

BIOGRAPHY & AUTOBIOGRAPHY / General

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