I am on my way to Australia to see Roger, and I made a short stop in Singapore, where I visited the incredible Gardens by the Bay, a high-tech "horticultural mega project" featuring 160-feet-high solar-powered supertrees and climate-controlled biomes. The three waterfront gardens are built on reclaimed land, and the Bay South Garden alone is said to have cost more than $720 million. The highlight of the gardens, at least for me, are the so-called supertrees, which are essentially vertical gardens with bromeliads, ferns, and tropical flowering climbers. Two of the trees are connected via a cool aerial walkway, and some trees have photovoltaic cells on their canopies which light up at night, while others act as air exhaust receptacles. The supertrees are meant to "mimic the ecological functions of real trees through their environmentally sustainable features."