Giant π-conjugated macrocycles composed of thiophene, acetylene, and ethylene subunits arranged as 72π, 108π, 144π, and 180π electron systems were synthesized and analyzed for their one- and ...

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Another clear chemical sunscreen, this formula looks and feels a lot like Supergoop Unseen Sunscreen SPF 50 but costs less. It’s harder to find, however. $9 from Trader Joe's (1.7 ounces) ...

Following the recent external review of the Extended Structural Adjustment Facility (ESAF), the Fund is strengthening its programs by more systematically incorporating social safety nets and more ...

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