In the arc of human history, it is only very recently that we have begun to live in a connected world. Long before Facebook and Twitter, human populations were separated by continents — and oceans — in ways that limited cultural and information exchange. It turns out the oceans are much more connected. This was brought home this week in a new scientific publication – and subsequent blog by my colleague Carl Safina – that unequivocally showed that Pacific bluefin tuna had transported radiation from the March 2011 Fukushima Dai-ichi nuclear power plant meltdown in Japan to the shores of California.
For many, this news will beg the question: “Should I avoid eating bluefin tuna?” The answer is unequivocally, “yes,” but not because of the radiation – which is at levels low enough that it won’t have an effect on humans – but because of sustainability. The Monterey Bay Aquarium rates bluefin as “avoid” because because they are being caught faster than they can reproduce. Attention sushi lovers: Bluefin is also known as hon maguro or toro (tuna belly). If you see it on the menu, and you care about the future of fish, you should avoid it. If conservation concerns don’t motivate you, the high price alone may steer you away. Continue reading »