We calculated how much money trees save for your city


Megacities are on the rise. There are currently 47 such areas around the globe, each housing more than 10 million residents.

More than half the global population now lives in urban areas, comprising about 3 percent of the Earth. The ecological footprint of this growth is vast and there’s far more that can be done to improve life for urban residents around the world. Continue reading “We calculated how much money trees save for your city”


Good Morning Vietnam, Energy-wise


Vietnam, a leading indicator for the rest of the developing world, has seen tremendous growth in per capita energy consumption.

During a recent family vacation in Vietnam, I learned that the country is a microcosm for several major trends in energy consumption in the developing world: (1) there’s a thriving middle class, (2) hot and humid weather is driving air conditioning demand and (3) rural electrification rates are very high. (We also loved the food, culture and beaches, and we were gripped by the poignant remnants of the American War, as it’s known locally. I highly recommend it as a vacation destination if that’s your thing.)

Let’s start with some basic facts: Vietnam has seen extraordinary growth in per capita energy consumption over the past several decades. Since 1990, the earliest year for which data are available for most countries, total per capita energy consumption in Vietnam has more than doubled. (All the country-level data in this post come from the World Bank Development Indicators.) This puts Vietnam in the top 3% of countries in the world in terms of growth in per capita energy consumption. Of the countries with more than 5 million people, only China and Thailand have had more rapid growth. Continue reading “Good Morning Vietnam, Energy-wise”

Tiếng Việt từ thời LM de Rhodes – Kinh Lạy Cha (phần 5B)

Nguyễn Cung Thông[1]

>> Tiếng Việt từ thời LM de Rhodes – Kinh Lạy Cha (phần 5A)

Phần này bàn về tiếng Việt dùng trong Kinh Lạy Cha (KLC) qua các văn bản từ thời bình minh của chữ quốc ngữ. Tiếp theo bài viết 5A, bài 5B sẽ ghi nhận thêm các dữ kiện nhìn KLC từ các lăng kính khác nhau, hi vọng người đọc sẽ thấy thích thú và tìm hiểu sâu xa hơn.

Chúng ta đang ở đây (ở trên trái đất, trong hệ mặt trời hay chỉ là một chấm nhỏ ở đầu mũi tên này). Hình trên cho thấy hệ mặt trời nằm trong dãi Ngân Hà có trung tâm là vùng sáng ở giữa (chùm sao Saggitarius). Continue reading “Tiếng Việt từ thời LM de Rhodes – Kinh Lạy Cha (phần 5B)”