Usually, the sieve-tubes of the phloem have been regarded as the channels of sugar transport, as micro-chemical observations, such as those of Prof. Mangham, seemed to show considerable quantities ...

Why and when to prune a birch tree: what the arborists say. Birch are desirable trees that bring texture and seasonal ...

How is matter different from mass? These and other questions about the deepest levels of physics, answered inside.

Silicon (Si) is one of the most abundant elements on Earth, found in large quantities in soil. While Si is not essential for land plants, many plants, such as rice and grasses, have used Si to develop ...

What's that tree made of? Leaves and bark, xylem and phloem, and cambium. What are those made of? Cells, molecules, carbon atoms. But what's an atom made of? What is matter, really? Matter is ...

While K is a known essential element, very little is known about silicon until recently and its effect on plant growth. Our soils are largely composed of silicon, sand (silicon oxide) and clays ...

KPF also connects the design of the urban cell wall to natural structures, such as the hexagonal prisms of a honeycomb or the cellular structure of xylem and phloem, the vascular tissue in plant life.