The Turnstone
I believe that the science behind important issues should be accessible to everyone
- Indexed issues, last 90 days
- 14
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- Sep 27, 2026
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- Jul 31, 2026
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Grains of truth (opens the original)
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When I was first learning about plants, probably in the 1980s, I learned that there were two kinds of flowering plants. There were several clear differences between the two, obvious even when the plants were tiny. In fact, the distinction was so obvious, it could even be seen in the seed.When a flowering plant grows from a seed, it first grows a root, which heads downwards. Then it sends a shoot upwards, which becomes the aboveground parts of the plant, the stem and leaves. At this stage, the em
A little spring (opens the original)
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Winter was cold and wet, so I’m delighted that spring is well and truly here. My apples and pears haven’t flowered yet, but my garden is bursting with colour. I make no effort to match anything and a lot of what I grow is from cuttings or self-sown, so it’s a bit of a mess. But it’s a happy little space nonetheless.I wanted to share a little garden joy … Read more
Fallen giants (opens the original)
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A walk along an unfamiliar track in Ōtari | Wilton’s Bush reminds me of something I’ve been missing. I love the lush forest of Khandallah Park, with its dense, dark canopy and forest floor thick with ferns. The sight and sound of the pristine headwaters of the Waitohi Stream flowing over moss-covered rocks always delights me. But the forest is missing its mighty matriarchs and patriarchs, the massive trees which grow so tall that they thrust through the canopy and tower above their neighbours.Ōt
Drawn from the past (opens the original)
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Silhouetted against the sky, the leaves of the forest canopy are like the stars in a distant galaxy. Each one is tiny, but there is such a multitude that they cast enough shade to shelter a carpet of mosses and ferns on the forest floor. I keep noticing details such as velvet-black tree trunks and the way the ground is speckled with yellow leaves. Usually, when I walk in the forest, I stay close to home. But today I’ve driven an extra fifteen minutes to the east and the forest is completely diff
Ferny freaks (opens the original)
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On a walk last week, I came across some of my favourite plants1, so I thought I’d share them, along with another couple of ferny freaks. I first encountered this favourite in the Kauaeranga Valley, south-east of Auckland, on a university field trip. I was learning to identify the many different plants which grew on the trunks of tree ferns, and these wer… Read more
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