More from Bob Holmes
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Earth
How Canada’s green credentials fell apart
Opinion
Earth
Deep future: What will our descendants know about us?
Features
Protection efforts may not save endangered animals
Culture
Earth
Oklahoma bill tackles ‘controversial’ science education
News
Earth
Climate sceptics may find fertile ground in US schools
News
Environment
Fossil DNA has clues to surviving rapid climate change
News
Go with the flow system
Culture
Physics
ESP evidence airs science’s dirty laundry
Features
Life
Soft food may lead to a mouth with too many teeth
News
Pacific Ocean chokes on plastic pollution
Culture
Health
Deep impact: The bad news about banging your head
Features
Health
Antibiotic resistance predates drugs 鈥� by 30,000 years
News