Category Archives: opinions

Local Cultures Add to the Sustainability of the City

In recent World Cities Summit 2010 held between 28 June and 1 July, when participants from various part of the world simultaneously voted urban green spaces as the most important element for a liveable city.Also,Local culture such as gardening and … Continue reading

Posted in Cities, earth, Glimpses of Our Cities, Green spaces, opinions | Leave a comment

Tree Elders & Drought

Thanks to National Public Radio (USA): How Is A 1,600-Year-Old Tree Weathering California’s Drought? CHRISTOPHER JOYCE It’s been a brutal forest fire season in California. But there’s actually a greater threat to California’s trees — the state’s record-setting drought. The … Continue reading

Posted in earth, opinions | Leave a comment

Americans Lived on a Land Bridge for Thousands of year

It was believed that the Americas were populated by humans crossing from Siberia to Alaska across a land bridge was first proposed as far back as 1590, and has been generally accepted since the 1930s. But  evidence  from DNA studies shows … Continue reading

Posted in Class Notes, earth, Evolution, opinions | Tagged , , | 1 Comment

Social Cost of Climate Change

Expert Consensus on the Economics of Climate Change (41 page pdf, Peter Howard and Derek Sylvan, Institute for Policy Integrity, New York University School of Law, Dec. 2015) Today we review a survey of 365 leading economists from around the … Continue reading

Posted in climate change, earth, opinions, pollution | 1 Comment